doc: add blanks around code fences

Addresses Markdownlint MD031 rule warnings

PR-URL: https://github.com/nodejs/node/pull/29366
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: David Carlier <devnexen@gmail.com>

BUILDING.md

@@ -665,16 +665,19 @@ during configuration if the ICU version is too old.
 #### Unix/macOS
 
 From an already-unpacked ICU:
+
 ```console
 $ ./configure --with-intl=[small-icu,full-icu] --with-icu-source=/path/to/icu
 ```
 
 From a local ICU tarball:
+
 ```console
 $ ./configure --with-intl=[small-icu,full-icu] --with-icu-source=/path/to/icu.tgz
 ```
 
 From a tarball URL:
+
 ```console
 $ ./configure --with-intl=full-icu --with-icu-source=http://url/to/icu.tgz
 ```

CPP_STYLE_GUIDE.md

@@ -185,6 +185,7 @@ class FancyContainer {
  ...
 }
 ```
+
 ## Memory Management
 
 ### Memory allocation

doc/api/child_process.md

@@ -168,6 +168,7 @@ generated output. The `command` string passed to the exec function is processed
 directly by the shell and special characters (vary based on
 [shell](https://en.wikipedia.org/wiki/List_of_command-line_interpreters))
 need to be dealt with accordingly:
+
 ```js
 exec('"/path/to/test file/test.sh" arg1 arg2');
 // Double quotes are used so that the space in the path is not interpreted as

doc/api/cli.md

@@ -70,6 +70,7 @@ added: v10.12.0
 -->
 
 Print source-able bash completion script for Node.js.
+
 ```console
 $ node --completion-bash > node_bash_completion
 $ source node_bash_completion

doc/api/console.md

@@ -498,6 +498,7 @@ This method does not display anything unless used in the inspector. The
 `console.profile()` method starts a JavaScript CPU profile with an optional
 label until [`console.profileEnd()`][] is called. The profile is then added to
 the **Profile** panel of the inspector.
+
 ```js
 console.profile('MyLabel');
 // Some code

doc/api/crypto.md

@@ -716,6 +716,7 @@ const dh = crypto.createDiffieHellmanGroup(name);
 ```
 
 `name` is taken from [RFC 2412][] (modp1 and 2) and [RFC 3526][]:
+
 ```console
 $ perl -ne 'print "$1\n" if /"(modp\d+)"/' src/node_crypto_groups.h
 modp1  #  768 bits

doc/api/dgram.md

@@ -528,6 +528,7 @@ socket.bind(1234, () => {
 
 #### Example: IPv4 Outgoing Multicast Interface
 All systems use an IP of the host on the desired physical interface:
+
 ```js
 const socket = dgram.createSocket('udp4');
 

doc/api/errors.md

@@ -70,6 +70,7 @@ Errors that occur within _Asynchronous APIs_ may be reported in multiple ways:
     // Otherwise handle the data
   });
   ```
+
 - When an asynchronous method is called on an object that is an
   [`EventEmitter`][], errors can be routed to that object's `'error'` event.
 

doc/api/esm.md

@@ -188,6 +188,7 @@ module via `import`.
   "main": "./src/index.js"
 }
 ```
+
 ```js
 // ./my-app.mjs
 

doc/api/fs.md

@@ -231,6 +231,7 @@ fs.readFileSync(new URL('file:///p/a/t/h/%2f'));
 /* TypeError [ERR_INVALID_FILE_URL_PATH]: File URL path must not include encoded
 / characters */
 ```
+
 On Windows, `file:` URLs having encoded backslash will result in a throw:
 
 ```js
@@ -3815,6 +3816,7 @@ recommended.
 
 When `file` is a file descriptor, the behavior is almost identical to directly
 calling `fs.write()` like:
+
 ```javascript
 fs.write(fd, Buffer.from(data, options.encoding), callback);
 ```

doc/api/http2.md

@@ -2459,6 +2459,7 @@ The `CONNECT` method is used to allow an HTTP/2 server to be used as a proxy
 for TCP/IP connections.
 
 A simple TCP Server:
+
 ```js
 const net = require('net');
 

doc/api/https.md

@@ -255,6 +255,7 @@ req.on('error', (e) => {
 });
 req.end();
 ```
+
 Example using options from [`tls.connect()`][]:
 
 ```js

doc/api/perf_hooks.md

@@ -299,6 +299,7 @@ obs.observe({ entryTypes: ['mark'], buffered: true });
 
 performance.mark('test');
 ```
+
 Because `PerformanceObserver` instances introduce their own additional
 performance overhead, instances should not be left subscribed to notifications
 indefinitely. Users should disconnect observers as soon as they are no

doc/api/process.md

@@ -760,6 +760,7 @@ process.
 ```js
 console.log(`Current directory: ${process.cwd()}`);
 ```
+
 ## process.debugPort
 <!-- YAML
 added: v0.7.2
@@ -771,6 +772,7 @@ The port used by Node.js's debugger when enabled.
 ```js
 process.debugPort = 5858;
 ```
+
 ## process.disconnect()
 <!-- YAML
 added: v0.7.2
@@ -2199,6 +2201,7 @@ To check if a stream is connected to a [TTY][] context, check the `isTTY`
 property.
 
 For instance:
+
 ```console
 $ node -p "Boolean(process.stdin.isTTY)"
 true

doc/api/stream.md

@@ -1026,6 +1026,7 @@ const writable = fs.createWriteStream('file.txt');
 // All the data from readable goes into 'file.txt'.
 readable.pipe(writable);
 ```
+
 It is possible to attach multiple `Writable` streams to a single `Readable`
 stream.
 

doc/api/tls.md

@@ -950,6 +950,7 @@ For EC keys, the following properties may be defined:
   `'P-256'`.
 
 Example certificate:
+
 ```text
 { subject:
    { OU: [ 'Domain Control Validated', 'PositiveSSL Wildcard' ],

doc/api/util.md

@@ -101,6 +101,7 @@ where `3245` is the process id. If it is not run with that
 environment variable set, then it will not print anything.
 
 The `section` supports wildcard also:
+
 ```js
 const util = require('util');
 const debuglog = util.debuglog('foo-bar');
@@ -110,6 +111,7 @@ debuglog('hi there, it\'s foo-bar [%d]', 2333);
 
 if it is run with `NODE_DEBUG=foo*` in the environment, then it will output
 something like:
+
 ```txt
 FOO-BAR 3257: hi there, it's foo-bar [2333]
 ```
@@ -889,6 +891,7 @@ doSomething[util.promisify.custom] = (foo) => {
   });
 };
 ```
+
 If `promisify.custom` is defined but is not a function, `promisify()` will
 throw an error.
 

doc/api/vm.md

@@ -557,6 +557,7 @@ Module Record][]s in the ECMAScript specification.
     import foo from 'foo';
     //              ^^^^^ the module specifier
     ```
+
   * `referencingModule` {vm.SourceTextModule} The `Module` object `link()` is
     called on.
   * Returns: {vm.SourceTextModule|Promise}

doc/api/zlib.md

@@ -230,6 +230,7 @@ quality, but can be useful when data needs to be available as soon as possible.
 
 In the following example, `flush()` is used to write a compressed partial
 HTTP response to the client:
+
 ```js
 const zlib = require('zlib');
 const http = require('http');

doc/guides/updating-root-certs.md

@@ -29,6 +29,7 @@ version in the [tag list][].
 2. Update `certdata.txt` from the NSS release tag.
 
 Update the tag in the commands below, and run:
+
 ```shell
 cd tools/
 ./mk-ca-bundle.pl -v 2>_before
@@ -63,6 +64,7 @@ Run the command below:
 Confirm that `../src/node_root_certs.h` was updated.
 
 Determine what changes were made by diffing the before and after files:
+
 ```shell
 % diff _before _after
 11d10
@@ -91,6 +93,7 @@ Determine what changes were made by diffing the before and after files:
 ```
 
 Use the diff to update the message below, and commit `src/node_root_certs.h`:
+
 ```text
 crypto: update root certificates
 

doc/guides/writing-tests.md

@@ -205,6 +205,7 @@ const server = http.createServer(common.mustCall((req, res) => {
 });
 
 ```
+
 #### Countdown Module
 
 The common [Countdown module](https://github.com/nodejs/node/tree/master/test/common#countdown-module)
@@ -401,11 +402,13 @@ $ make cctest
 ```
 
 A filter can be applied to run single/multiple test cases:
+
 ```console
 $ make cctest GTEST_FILTER=EnvironmentTest.AtExitWithArgument
 ```
 
 `cctest` can also be run directly which can be useful when debugging:
+
 ```console
 $ out/Release/cctest --gtest_filter=EnvironmentTest.AtExit*
 ```

doc/onboarding-extras.md

@@ -34,6 +34,7 @@ request.
     they pass, **probably** minor or patch
   * A breaking change helper
     ([full source](https://gist.github.com/chrisdickinson/ba532fa0e4e243fb7b44)):
+
     ```sh
     SHOW=$(git show-ref -d $(git describe --abbrev=0) | tail -n1 | awk '{print $1}')
     git checkout $(git show -s --pretty='%T' $SHOW) -- test