Twenty Nineteen: Update theme information in the package.json file.

This removes references to the archived Git repository and updates the URLs to point to the theme's WordPress.org Theme Directory URL and Trac.

Follow-up to [50924].

See #53196.

git-svn-id: https://develop.svn.wordpress.org/trunk@50925 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-content/themes/twentynineteen/package.json

@@ -3,9 +3,9 @@
   "version": "2.0.0",
   "description": "Default WP Theme",
   "bugs": {
-    "url": "https://github.com/WordPress/twentynineteen/issues"
+    "url": "https://core.trac.wordpress.org/"
   },
-  "homepage": "https://github.com/WordPress/twentynineteen#readme",
+  "homepage": "https://wordpress.org/themes/twentynineteen/",
   "devDependencies": {
     "@wordpress/browserslist-config": "^3.0.2",
     "autoprefixer": "^9.8.6",