fix: correct repository URL case to match GitHub organization

npm provenance validation requires exact case match between
package.json repository and GitHub organization name.

Author: onikiienko

package.json

@@ -23,5 +23,5 @@
   ],
   "types": "src/index.d.ts",
   "homepage": "https://macpaw.github.io/browser-deeplink/example",
-  "repository": "macpaw/browser-deeplink"
+  "repository": "MacPaw/browser-deeplink"
 }