Trigger on changes to 2.x branch

Author: tonysm

.github/workflows/run-tests.yml

@@ -48,7 +48,7 @@ jobs:
 
   trigger-workflow:
     runs-on: ubuntu-latest
-    if: github.ref == 'refs/heads/2.x' && contains(github.event.head_commit.modified, 'docs/')
+    if: github.ref == 'refs/heads/2.x'
     steps:
       - name: Trigger site workflow
         run: |