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-DeeNgo/

Check the repository description and README, where the two incorrect URLs are identified. Update both links to https://githubschool.github.io/github-games-DeeNgo/ and verify that the description and README now point to that copy of the game.

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