Merge pull request #5217 from planetscale/morgo-update-logos

Add missing logos from website

ADOPTERS.md

@@ -1,15 +1,19 @@
 This is an alphabetical list of known adopters of Vitess. Some have already gone into production, and others are at various stages of testing.
 
-* [YouTube](https://youtube.com)
 * [Axon](https://axon.com)
 * [BetterCloud](https://bettercloud.com)
+* [CloudSigma](https://www.cloudsigma.com/)
 * [FlipKart](https://flipkart.com)
+* [GitHub](http://github.com/)
 * [HubSpot](https://product.hubspot.com/)
 * [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)
 * [Slack](https://slack.com)
 * [Square](https://square.com)
 * [Stitch Labs](https://stitchlabs.com)
+* [YouTube](https://youtube.com)