Add padding to code samples and fix some indentation issues

Signed-off-by: lucperkins <lucperkins@gmail.com>

content/docs/quickstart/cpp.md

@@ -225,28 +225,30 @@ int main(int argc, char** argv) {
 Just like we did before, from the `examples/cpp/helloworld` directory:
 
 1. Build the client and server after having made changes:
-   ```sh
-   $ make
-   ```
+
+    ```sh
+    $ make
+    ```
 
 2. Run the server
 
-   ```sh
-   $ ./greeter_server
-   ```
+    ```sh
+    $ ./greeter_server
+    ```
 
 3. On a different terminal, run the client
 
-   ```sh
-   $ ./greeter_client
-   ```
+    ```sh
+    $ ./greeter_client
+    ```
 
-   You should see the updated output:
-   ```sh
-   $ ./greeter_client
-   Greeter received: Hello world
-   Greeter received: Hello again world
-   ```
+    You should see the updated output:
+
+    ```sh
+    $ ./greeter_client
+    Greeter received: Hello world
+    Greeter received: Hello again world
+    ```
 
 ### What's next
 

static/css/style.css

@@ -57,6 +57,10 @@ p img {
   width: 100%;
 }
 
+.highlight pre {
+  padding: 1rem;
+}
+
 
 .btn {
   margin-top: 2%;