ci: correct outdated branch in documentation hosting

Main no longer exists and was replaced by `production`. Fix outdated
trigger for workflow by replacing the branch name.

Signed-off-by: Ivin Joel Abraham <ivinjabraham@gmail.com>

Author: ivinjabraham

.github/workflows/host-documentation.yml

@@ -2,7 +2,7 @@ name: Host Documentation
 on:
   push:
     branches:
-    - main
+    - production
 
 permissions:
   contents: read
@@ -46,4 +46,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4.0.5
+        uses: actions/deploy-pages@v4.0.5