Tweak a changelog entry

Author: bbatsov

CHANGELOG.md

@@ -4,7 +4,7 @@
 
 ### Bugs fixed
 
-- [#3559](https://github.com/clojure-emacs/cider/issues/3559): don't apply [dynamic syntax highlighting](https://docs.cider.mx/cider/config/syntax_highlighting.html) over buffers belonging to unrelated Sesman sessions.
+- [#3559](https://github.com/clojure-emacs/cider/issues/3559): Don't apply [dynamic syntax highlighting](https://docs.cider.mx/cider/config/syntax_highlighting.html) over buffers belonging to unrelated Sesman sessions.
 
 ## 1.9.0 (2023-10-24)