fix deps

Author: QingWei-Li

package.json

@@ -32,7 +32,7 @@
     "connect-livereload": "^0.6.0",
     "cp-file": "^4.1.1",
     "docsify": ">=3",
-    "docsify-server-renderer": "^4.5.7",
+    "docsify-server-renderer": ">=4",
     "fs-extra": "^2.1.2",
     "livereload": "^0.6.2",
     "lru-cache": "^4.1.1",