Update deploy-docs.yml

.github/workflows/deploy-docs.yml

@@ -9,6 +9,7 @@ on:
     branches: [main]
     paths:
       - "docs/**"
+      - ".github/workflows/**" # define the concrete paths on which a change triggers this action, e.g. backend/**
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: