Update deploy.yml

Author: Jinho1011

.github/workflows/deploy.yml

@@ -52,7 +52,7 @@ jobs:
           # done
           pnpm build
 
-      - name: Deploy to GitHub Pages
-        if: github.ref == 'refs/heads/main'
-        run: |
-          pnpm run deploy
+      - uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./build