Filter out non-qhelp files

Author: aibaars

.github/workflows/qhelp-pr-preview.yml

@@ -28,7 +28,7 @@ jobs:
         run: |
           (git diff --name-only --diff-filter=ACMRT HEAD~1 HEAD | grep '.qhelp$' | grep -v '.inc.qhelp';
            git diff --name-only --diff-filter=ACMRT HEAD~1 HEAD | grep '.inc.qhelp$' | xargs -d '\n' -rn1 basename | xargs -d '\n' -rn1 git grep -l) |
-           sort -u > "${{ runner.temp }}/paths.txt"
+           grep '.qhelp$' | sort -u > "${{ runner.temp }}/paths.txt"
 
       - name: QHelp preview
         run: |