Update java/change-notes/2021-05-05-kryo-improvements.md

Co-authored-by: Anders Schack-Mulligen <aschackmull@users.noreply.github.com>

Author: JLLeitschuh

java/change-notes/2021-05-05-kryo-improvements.md

@@ -1,3 +1,3 @@
 lgtm,codescanning
-* Add support for version 5 of the Kryo serialzation/deserialization framework.
+* Add support for version 5 of the Kryo serialization/deserialization framework.
 * Add support for detecting safe uses of Kryo utilizing `KryoPool.Builder`. [#4992](https://github.com/github/codeql/issues/4992)