Update main.yml

Author: ZhangHanDong

.github/workflows/main.yml

@@ -27,5 +27,5 @@ jobs:
       - run: mdbook build  # In case of custom book path: mdbook build path/to/mybook && mdbook test path/to/mybook
       - uses: JamesIves/[email protected]
         with:
-          branch: gh-pages # The branch the action should deploy to.
-          folder: book # The folder the action should deploy.
+          branch: main # The branch the action should deploy to.
+          folder: book # The folder the action should deploy.