Add repository URL to package.json (#10748)

Co-authored-by: Tim Neutkens <timneutkens@me.com>

packages/next-plugin-google-analytics/package.json

@@ -1,6 +1,10 @@
 {
   "name": "@next/plugin-google-analytics",
   "version": "9.3.5-canary.3",
+  "repository": {
+    "url": "zeit/next.js",
+    "directory": "packages/next-plugin-google-analytics"
+  },
   "nextjs": {
     "name": "Google Analytics",
     "required-env": [

packages/next-plugin-material-ui/package.json

@@ -1,6 +1,10 @@
 {
   "name": "@next/plugin-material-ui",
   "version": "9.3.5-canary.3",
+  "repository": {
+    "url": "zeit/next.js",
+    "directory": "packages/next-plugin-material-ui"
+  },
   "nextjs": {
     "name": "Material UI",
     "required-env": []

packages/next-plugin-sentry/package.json

@@ -1,6 +1,10 @@
 {
   "name": "@next/plugin-sentry",
   "version": "9.3.5-canary.3",
+  "repository": {
+    "url": "zeit/next.js",
+    "directory": "packages/next-plugin-sentry"
+  },
   "nextjs": {
     "name": "Sentry",
     "required-env": [

packages/next-polyfill-nomodule/package.json

@@ -4,6 +4,10 @@
   "description": "A polyfill for non-dead, nomodule browsers.",
   "main": "dist/polyfill-nomodule.js",
   "license": "MIT",
+  "repository": {
+    "url": "zeit/next.js",
+    "directory": "packages/next-polyfill-nomodule"
+  },
   "scripts": {
     "prepublish": "microbundle src/index.js -f iife --no-sourcemap --external none",
     "build": "microbundle watch src/index.js -f iife --no-sourcemap --external none"