URL in description and README broken

The URL in the repository description and README are pointing to githubschool's copy of the game instead of yours.

Please fix both so they point to your copy of the game at https://githubschool.github.io/github-games-vipulgaur99/

Open the repository description and README and inspect the existing game URL in both places. Replace each incorrect link with https://githubschool.github.io/github-games-vipulgaur99/ and verify that both links point to the repository's copy of the game.

索引モデルが issue の本文から書いたものです。