Fix repository URL casing for npm provenance verification

Author: nedimf

package.json

@@ -66,7 +66,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/appgram/react"
+    "url": "https://github.com/AppGram/react"
   },
   "keywords": [
     "react",