fix typo in package.json (#1454)

package.json

@@ -86,7 +86,7 @@
   },
   "lint-staged": {
     "**/*.{js,jsx,less}": [
-      "prettier --wirter",
+      "prettier --write",
       "git add"
     ],
     "**/*.{js,jsx}": "lint-staged:js",