docs: 修复文档版本问题

package.json

@@ -37,9 +37,9 @@
     "@commitlint/config-conventional": "^11.0.0",
     "@fesjs/fes": "^2.0.0",
     "@fesjs/plugin-jest": "^2.0.0",
-    "@vuepress/plugin-docsearch": "^2.0.0-beta.22",
-    "@vuepress/plugin-pwa": "^2.0.0-beta.22",
-    "@vuepress/plugin-pwa-popup": "^2.0.0-beta.22",
+    "@vuepress/plugin-docsearch": "2.0.0-beta.28",
+    "@vuepress/plugin-pwa": "2.0.0-beta.28",
+    "@vuepress/plugin-pwa-popup": "2.0.0-beta.28",
     "@webank/eslint-config-webank": "0.3.1",
     "chalk": "^4.1.2",
     "chokidar": "^3.5.2",
@@ -51,7 +51,7 @@
     "lint-staged": "^10.4.0",
     "postcss": "^8.0.0",
     "postcss-loader": "^5.0.0",
-    "vuepress": "^2.0.0-beta.22",
+    "vuepress": "2.0.0-beta.28",
     "yargs-parser": "^20.2.9"
   },
   "lint-staged": {