enable only when changes in docs

Signed-off-by: Artem Navoiev <tenmozes@gmail.com>

.github/workflows/sync-docs.yml

@@ -3,8 +3,8 @@ on:
   push:
     branches:
       - 'master'
-      - 'sync-docs'
-        
+    paths:
+      - 'docs/**'
   workflow_dispatch: {}
 permissions:
   contents: read  # This is required for actions/checkout and to commit back image update
@@ -33,7 +33,6 @@ jobs:
           git_user_signingkey: true
           git_commit_gpgsign: true
           workdir: docs
-
       - name: update code and commit
         run: |
           rm -rf content