Add Peak Games

Signed-off-by: Morgan Tocker <tocker@gmail.com>

ADOPTERS.md

@@ -9,6 +9,7 @@ This is an alphabetical list of known adopters of Vitess. Some have already gone
 * [JD](https://jd.com/)
 * [Nozzle](https://nozzle.io)
 * [opensooq.com](https://www.opensooq.com/)
+* [Peak Games](https://peak.com/)
 * [Pinterest](https://pinterest.com)
 * [Pixel Federation](https://pixelfederation.com)
 * [Quiz of Kings](https://quizofkings.com)