only deploy gh-pages if something in the docs folder changes

.github/workflows/deploy-api-docs.yml

@@ -2,9 +2,9 @@
 name: deploy-api-docs
 
 on:
-  # Runs on pushes targeting the default branch
   push:
     branches: ["unstable"]
+    paths: ["docs/**"] # only run if the docs are updated
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: