chore(v2): Regen codesandbox templates + add template: "docusaurus" (#4063)

examples/classic/docusaurus.config.js

@@ -4,6 +4,7 @@ module.exports = {
   url: 'https://your-docusaurus-test-site.com',
   baseUrl: '/',
   onBrokenLinks: 'throw',
+  onBrokenMarkdownLinks: 'warn',
   favicon: 'img/favicon.ico',
   organizationName: 'facebook', // Usually your GitHub org/user name.
   projectName: 'docusaurus', // Usually your repo name.

examples/classic/package.json

@@ -9,19 +9,20 @@
     "swizzle": "docusaurus swizzle",
     "deploy": "docusaurus deploy",
     "serve": "docusaurus serve",
+    "clear": "docusaurus clear",
     "dev": "docusaurus start"
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.0-alpha.66",
-    "@docusaurus/preset-classic": "2.0.0-alpha.66",
-    "@mdx-js/react": "^1.5.8",
+    "@docusaurus/core": "2.0.0-alpha.70",
+    "@docusaurus/preset-classic": "2.0.0-alpha.70",
+    "@mdx-js/react": "^1.6.21",
     "clsx": "^1.1.1",
     "react": "^16.8.4",
     "react-dom": "^16.8.4"
   },
   "browserslist": {
     "production": [
-      ">0.2%",
+      ">0.5%",
       "not dead",
       "not op_mini all"
     ],

examples/classic/sandbox.config.json

@@ -2,5 +2,5 @@
   "infiniteLoopProtection": true,
   "hardReloadOnChange": true,
   "view": "browser",
-  "template": "node"
-}
+  "template": "docusaurus"
+}