Update version-check.yml

.github/workflows/version-check.yml

@@ -14,7 +14,7 @@ jobs:
           #!/bin/bash
 
           # Get the base commit SHA (where the branch started)
-          BASE_SHA=$(git merge-base origin/gh-pages $GITHUB_SHA)
+          BASE_SHA=$(git merge-base gh-pages $GITHUB_SHA)
 
           # Check if 'config.yml' was modified in this pull request
           if git diff --name-only $BASE_SHA $GITHUB_SHA | grep -q 'config.yml'; then