docs: update readme file to fix path to OAuth provider

Author: tejas161

README.md

@@ -253,7 +253,7 @@ It can also be set using environment variables:
 - Yandex
 - Zitadel
 
-You can add your favorite provider by creating a new file in [src/runtime/server/lib/oauth/](./src/runtime/server/lib/oauth/).
+You can add your favorite provider by creating a new file in [src/runtime/server/lib/oauth/](https://github.com/atinux/nuxt-auth-utils/tree/main/src/runtime/server/lib/oauth).
 
 #### Example