allow master branch

Author: jakoch

.github/workflows/build-docs.yml

@@ -127,7 +127,7 @@ jobs:
 # ---------------------------------------------------------------------------------------
 
     needs: build
-    if: github.ref == 'refs/heads/main'
+    if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master'
 
     runs-on: ubuntu-latest