Merge pull request #1016 from lhotari/lh-fix-GHA-builddocs

Run builddocs only for pushes to master branch in nosqlbench/nosqlbench

.github/workflows/build.yml

@@ -79,6 +79,7 @@ jobs:
   builddocs:
     needs: build
     runs-on: ubuntu-20.04
+    if: ${{ github.repository == 'nosqlbench/nosqlbench' && github.event_name == 'push' && github.ref_name == 'main' }}
     steps:
 
       - name: set git username