Update README.md (#345)

Signed-off-by: Kerollos Magdy <kerolloz@yahoo.com>

README.md

@@ -891,7 +891,7 @@ declare module "@fastify/jwt" {
       id: number,
       name: string,
       age: number
-      } // user type is return type of `request.user` object
+    } // user type is return type of `request.user` object
   }
 }