Fix formatting for Kotlin version support note

Author: jonjanego

docs/codeql/codeql-overview/codeql-changelog/codeql-cli-2.22.3.rst

@@ -98,4 +98,4 @@ C/C++
 Java/Kotlin
 """""""""""
 
-*   Kotlin versions up to 2.2.2*x* are now supported.
+*   Kotlin versions up to 2.2.2\ *x* are now supported.