Fix changelog (#212)

Author: vjik

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## 4.0.0 under development
 
-- Enh #195: Add debug collector for yiisoft/yii-debug (@xepozz)
+- New #195: Add debug collector for `yiisoft/yii-debug` (@xepozz)
 - Chg #207: Replace two `RouteCollectorInterface` methods `addRoute()` and `addGroup()` to single `addRoute()` (@vjik)
 - Enh #202: Add support for `psr/http-message` version `^2.0` (@vjik)