GH Actions: fix minor typo

Author: jrfnl

.github/workflows/label-new-prs.yml

@@ -29,7 +29,7 @@ jobs:
         env:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
 
-  validate-labeler-worflow:
+  validate-labeler-workflow:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'PHPCSStandards' && github.event_name == 'pull_request' && github.event.pull_request.merged == false