Update comment.yml (#21257)

Author: ruowan

.github/comment.yml

@@ -23,8 +23,9 @@
 
 - rule:
     type: label
-    label: CI-MissingBaseCommit
+    label: "CI-MissingBaseCommit"
     onlabeledComments: "Hi, @${PRAuthor}, For review efficiency consideration, when creating a new api version, it is required to place API specs of the base version in the first commit, and push new version updates into successive commits. You can use OpenAPIHub to initialize the PR for adding a new version. For more details refer to the [wiki](https://dev.azure.com/azure-sdk/internal/_wiki/wikis/internal.wiki/208/OpenAPI-Hub-Adding-new-API-version). Or you could onboard [API spec pipeline](https://dev.azure.com/azure-sdk/internal/_wiki/wikis/internal.wiki/606/Enable-API-Spec-Pipeline)"
+
 - rule:
     type: label
     repoAllowList: