Fix a changelog entry

Author: bbatsov

CHANGELOG.md

@@ -13,11 +13,10 @@
 
 * [#231](https://github.com/clojure-emacs/refactor-nrepl/issues/231) hotload-dependencies temporarily disabled due to java 10 issues.
 * [#215](https://github.com/clojure-emacs/refactor-nrepl/issues/215) Support JVM system proxy in mvn artifacts listing
-* [#198](https://github.com/clojure-emacs/refactor-nrepl/issues/187) Delay middleware loading to speed up initialization.
+* [#198](https://github.com/clojure-emacs/refactor-nrepl/issues/198) Delay middleware loading to speed up initialization.
 * Bump [mranderson](https://github.com/benedekfazekas/mranderson) version to fix leiningen 2.8.x incompatibility issues
 * Drop Clojure 1.7.0 support
 
-
 ## 2.3.1
 
 ### Bugs fixed