add bugs field to package.json

Author: nerdoc

package.json

@@ -14,6 +14,9 @@
     "type": "git",
     "url": "git://github.com/nerdocs/vue-extensionpoints"
   },
+  "bugs": {
+    "url": "https://github.com/nerdocs/vue-extensionpoints/issues"
+  },
   "main": "./dist/vue-extensionpoints.common.js",
   "dependencies": {
     "core-js": "^3.4.3",