chore(deps): bump vitepress v1.0.0-alpha4

Author: tangmengyu.amber

package.json

@@ -11,7 +11,7 @@
 		"gray-matter": "^4.0.3",
 		"lodash": "^4.17.21",
 		"vite": "^2.9.12",
-		"vitepress": "1.0.0-alpha.2",
+		"vitepress": "^1.0.0-alpha.4",
 		"yorkie": "^2.0.0"
 	},
 	"scripts": {