update CHANGELOG.md for #2785

Author: bhcleek

CHANGELOG.md

@@ -73,6 +73,9 @@ BUG FIXES:
 * Fix `:GoRun` so that it works as expected when the current working directory
   is neither in GOPATH nor within a module.
   [[GH-2782]](https://github.com/fatih/vim-go/pull/2782)
+* Show the command executed by `:GoRun` when `g:go_debug` includes `'shell-commands'`.
+  [[GH-2785]](https://github.com/fatih/vim-go/pull/2785)
+
 
 ## v1.22 - (January 30, 2020)