Use --repl to enable REPL changelog note

Author: JaroslavTulach

CHANGELOG.md

@@ -5,10 +5,12 @@
 - [Enforce conversion method return type][10468]
 - [Renaming launcher executable to ensoup][10535]
 - [Space-precedence does not apply to value-level operators][10597]
+- [Must specify `--repl` to enable debug server][10709]
 
 [10468]: https://github.com/enso-org/enso/pull/10468
 [10535]: https://github.com/enso-org/enso/pull/10535
 [10597]: https://github.com/enso-org/enso/pull/10597
+[10709]: https://github.com/enso-org/enso/pull/10709
 
 #### Enso IDE