URL in description and README broken

The URL in the repository description and the one in the 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-ymdwiseguy/

Update the URL in the repository description and the URL in README so both point to https://githubschool.github.io/github-games-ymdwiseguy/. Check the repository page and README afterward to confirm both links target this copy of the game.

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