chore: fix docgen branch

Author: makspll

.github/workflows/mdbook.yml

@@ -3,7 +3,7 @@ name: Deploy mdBook to GitHub Pages
 on:
   push:
     branches:
-      - master
+      - main
       - staging
     paths:
       - 'docs/**'
@@ -46,4 +46,4 @@ jobs:
       uses: peaceiris/actions-gh-pages@v3
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
-        publish_dir: docs/book
+        publish_dir: docs/book