feature/list-formatters-in-help-command adding feature to changelog

Author: TomerPacific

CHANGELOG.md

@@ -33,6 +33,8 @@ Please see [CONTRIBUTING.md](https://github.com/cucumber/cucumber/blob/master/CO
 ### Removed
 
 ### Fixed
+* When running the help command, it now shows all available formatters under the --format option. 
+  [#1798](https://github.com/cucumber/cucumber-js/pull/1798)
 
 ## [7.3.1] (2021-07-20)