update CHANGELOG.md for #3558

Author: bhcleek

CHANGELOG.md

@@ -35,6 +35,7 @@ IMPROVEMENTS:
   [[GH-3554]](https://github.com/fatih/vim-go/pull/3554)
   [[GH-3556]](https://github.com/fatih/vim-go/pull/3556)
   [[GH-3557]](https://github.com/fatih/vim-go/pull/3557)
+  [[GH-3558]](https://github.com/fatih/vim-go/pull/3558)
 * Update codeAction response handling to work with gopls v0.12.0.
   [[GH-3555]](https://github.com/fatih/vim-go/pull/3555)