fix typo

Author: buptsb

package.json

@@ -43,7 +43,7 @@
     "simple-websocket": "^9.1.0",
     "string2compact": "^1.3.0",
     "unordered-array-remove": "^1.0.2",
-    "ws": "^7.4.5"
+    "ws": "^7.4.5",
     "querystring-browser": "^1.0.4"
   },
   "devDependencies": {