diff --git a/.github/workflows/check-documentation.yml b/.github/workflows/check-documentation.yml
index e75224ce4..66e2df5e4 100644
--- a/.github/workflows/check-documentation.yml
+++ b/.github/workflows/check-documentation.yml
@@ -71,6 +71,7 @@ jobs:
       with:
         use-quiet-mode: 'yes'
         use-verbose-mode: 'no'
+        # at any .md file change take the chance to check the links in all .md files
         check-modified-files-only: 'no'
         config-file: '.github/workflows/mlc_config.json'
         base-branch: 'trigger-docs.ocelot.social-deployment-by-markdown-file-changes-in-master-branch' # set to branch of current PR's branch