docs: info regarding updating the version in the help-text-test before a new release

Author: escapedcat

Diff for: README.md

@@ -206,6 +206,10 @@ For more information on how to contribute please take a look at our [contributio
 
 ### Publishing a release
 
+Before publishing a release do a `yarn run publish --dry-run` to get the upcoming version and update the version
+in the [`should print help` test](https://github.com/conventional-changelog/commitlint/blob/master/%40commitlint/cli/src/cli.test.ts#L431).  
+Commit that change before creating the new version without `--dry-run`.
+
 ```sh
 npm login
 ```