Update CHANGELOG-v3.89.md

Author: photonstorm

changelog/3.89/CHANGELOG-v3.89.md

@@ -18,3 +18,5 @@
 ## Examples, Documentation, Beta Testing and TypeScript
 
 Thanks to the following for helping with the Phaser Examples, Beta Testing, Docs, and TypeScript definitions, either by reporting errors, fixing them, or helping author the docs:
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+@justin-calleja