ci: 添加文档构建和部署的GitHub工作流

添加GitHub Actions工作流用于自动构建和部署文档，同时更新文档配置中的基础链接

.github/workflows/docs.yml

@@ -0,0 +1,17 @@
+name: Build and Deploy
+on: [push]
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@master
+
+    - name: vuepress-deploy
+      uses: jenkey2011/vuepress-deploy@master
+      env:
+        ACCESS_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+        TARGET_REPO: anghunk/CWD
+        TARGET_BRANCH: gh-pages
+        BUILD_SCRIPT: cd docs && npm install && npm run build
+        BUILD_DIR: docs/.vitepress/dist/

docs/.vitepress/config.mjs

@@ -6,6 +6,7 @@ export default defineConfig({
 	title: 'CWD 评论系统文档',
 	description: '基于 Cloudflare Workers 的轻量级评论系统',
 	lang: 'zh-CN',
+	link: '/',
 	head: [
 		[
 			'link',