Fix indentation (#4906)

* Fix indentation

* Fix more indentation

code-samples/community/serving/helloworld-rust/README.md

@@ -119,11 +119,11 @@ recreate the source files from this folder.
    spec:
      template:
        spec:
-       containers:
-         - image: docker.io/{username}/helloworld-rust
-           env:
-             - name: TARGET
-           value: "Rust Sample v1"
+         containers:
+           - image: docker.io/{username}/helloworld-rust
+             env:
+               - name: TARGET
+                 value: "Rust Sample v1"
    ```
 
 ## Build and deploy this sample

docs/serving/services/creating-services.md

@@ -25,16 +25,16 @@ Create a sample service:
         apiVersion: serving.knative.dev/v1
         kind: Service
         metadata:
-        name: helloworld-go
-        namespace: default
+          name: helloworld-go
+          namespace: default
         spec:
-        template:
-        spec:
-        containers:
-            - image: gcr.io/knative-samples/helloworld-go
-            env:
-                - name: TARGET
-                value: "Go Sample v1"
+          template:
+            spec:
+              containers:
+                - image: gcr.io/knative-samples/helloworld-go
+                  env:
+                    - name: TARGET
+                      value: "Go Sample v1"
         ```
 
     1. Apply the YAML file by running the command: