Update docs workflow to trigger on main branch

Changed the GitHub Actions workflow to run on pushes to the main branch instead of update-docs, ensuring documentation is built and deployed from the primary branch.

Author: JR-1991

.github/workflows/docs.yml

@@ -2,7 +2,7 @@ name: Build and deploy Astro docs
 
 on:
   push:
-    branches: [update-docs]
+    branches: [main]
   workflow_dispatch:
 
 permissions: