MNT Fix github action for deploying userdocs

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

@@ -1,13 +1,15 @@
-name: Build Docs
+name: Deploy Userhelp Docs
 on:
   push:
     branches:
+      - '3'
+      - '2'
       - 'master'
     paths:
       - 'docs/en/userguide/**'
 jobs:
-  build:
+  deploy:
-    name: build-docs
+    name: deploy-userhelp-docs
     runs-on: ubuntu-latest
     steps:
       - name: Run build hook