chore: update url

Author: Kent C. Dodds

package.json

@@ -74,7 +74,7 @@
   ],
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/kentcdodds/react-testing-library.git"
+    "url": "https://github.com/kentcdodds/react-testing-library.git"
   },
   "bugs": {
     "url": "https://github.com/kentcdodds/react-testing-library/issues"