fix double author in package

Author: nerdoc

package.json

@@ -3,7 +3,10 @@
   "version": "0.1.4",
   "description": "Vue CLI plugin for adding extensionpoints",
   "main": "index.js",
-  "author": "Christian González <[email protected]",
+  "author": {
+      "name": "Christian González",
+      "email": "[email protected]"
+  },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
@@ -16,7 +19,6 @@
     "plugins",
     "extensions"
   ],
-  "author": "Christian González <[email protected]>",
   "license": "MIT",
   "bugs": {
     "url": "https://github.com/nerdocs/vue-cli-plugin-extensionpoints/issues"