修复GitHub Actions工作流中的GITHUB_TOKEN引用，确保正确使用密钥

Author: elliottzheng

.github/workflows/vuepress-deploy.yml

@@ -26,7 +26,7 @@ jobs:
     - name: Deploy to GitHub Pages
       uses: crazy-max/ghaction-github-pages@v4
       with:
-        target_branch: gh-pages
+        target_branch: gh_pages
         build_dir: docs/.vuepress/dist/
       env:
-        GITHUB_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}