update filtering

.github/workflows/pr-check.yaml

@@ -17,23 +17,13 @@ jobs:
     - id: changed_files
       name: Changed Files
       uses: tj-actions/changed-files@v45
-    - id: md_changed_files
-      name: Spellcheck Markdown files
-      run: |-
-        files=''
-        for f in ${{ steps.changed_files.outputs.all }}
-        do
-          ext="${f##*.}"
-          if [ $ext = "md" || $ext = "mdx" ];
-          then
-            files="${f} ${files}"
-          fi
-        done
-
-        echo "files=${files}" >> $GITHUB_ENV
+      with:
+        # Avoid using single or double quotes for multiline patterns
+        files: |
+           **.md*
     - uses: rojopolis/[email protected]
       name: Spellcheck
-      if: ${{ env.files }}
+      if: ${{ steps.changed_files.outputs.all_changed_files }}
       with:
-        source_files: ${{ env.files }}
+        source_files: ${{ steps.changed_files.outputs.all_changed_files }}
         task_name: Markdown