Update homepage URL.

Author: ghengeveld

package.json

@@ -10,7 +10,7 @@
   ],
   "author": "Gert Hengeveld <[email protected]>",
   "license": "ISC",
-  "homepage": "https://github.com/ghengeveld/react-async",
+  "homepage": "https://react-async.dev",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/ghengeveld/react-async.git"