Fix Azure Container Registry Generator invalid YAML (#3414)

Signed-off-by: Parth Patel <p.patel81@yahoo.com>

docs/snippets/generator-acr-example.yaml

@@ -22,7 +22,7 @@ spec:
             "auths": {
               "myregistry.azurecr.io": {
                 "username": "{{ .username }}",
-                "identitytoken": "{{ .password }}",
+                "identitytoken": "{{ .password }}"
               }
             }
           }