Update apply-precommit.yml

This should (hopefully) only trigger automatted commits for our own repository scope.

Please only merge after TYPO3-Documentation/TYPO3CMS-Reference-CoreApi#5271 has proven to work properly.

.github/workflows/apply-precommit.yml

@@ -7,6 +7,7 @@ on:
 
 jobs:
   lint:
+    if: github.repository_owner == 'TYPO3-documentation'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code