adding link to git repo in package.json

Author: krislefeber

package.json

@@ -4,6 +4,7 @@
   "description": "A NestJS decorator for dataloader",
   "author": "Kris Lefeber <[email protected]>",
   "license": "MIT",
+  "repository":  "https://github.com/krislefeber/nestjs-dataloader",
   "scripts": {
     "prebuild": "rm -rf ./dist",
     "build": "tsc -p tsconfig.json",