Unrelated doc improvements

action.yml

@@ -80,7 +80,7 @@ inputs:
     default: false
   ANNOTATION_TYPE:
     description: >
-      Only needed if ANNOTATE_MISSING_LINES is set to true. This parameter allows you to choose between
+      Only relevant if ANNOTATE_MISSING_LINES is set to true. This parameter allows you to choose between
       notice, warning and error as annotation type. For more information look here:
       https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-notice-message
     default: warning
@@ -91,8 +91,11 @@ inputs:
 outputs:
   COMMENT_FILE_WRITTEN:
     description: >
-      If "true", a comment file was written to COMMENT_FILENAME. If "false",
-      no comment file was written (because the comment was already posted).
+      This output is only set when running in PR mode.It's a boolean indicating
+      whether a comment file was written to COMMENT_FILENAME or not. If so,
+      you'll need to run the action in workflow_run mode to post it. If
+      "false", no comment file was written (likely because the comment was
+      already posted to the PR).
 runs:
   using: docker
   image: Dockerfile