fix(ssr): missing package

Author: QingWei-Li

packages/docsify-server-renderer/package.json

@@ -15,6 +15,7 @@
     "test": "echo 'hello'"
   },
   "dependencies": {
-    "node-fetch": "^1.7.0"
+    "node-fetch": "^1.7.0",
+    "resolve-pathname": "^2.1.0"
   }
 }