update github actions

Author: kenpusney

.github/workflows/publish.yml

@@ -14,10 +14,10 @@ jobs:
       - run: yarn
 
       - name: Build
-        run: npx vuepress build
+        run: yarn build
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./.vuepress/dist
+          publish_dir: ./docs/.vuepress/dist