There's a merged pull request on the void-packages repository

git-cliff: generate and ship man page
https://github.com/void-linux/void-packages/pull/39344

Description:
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Motivation here is that running `git cliff --help` doesn't give any reasonable
output (just complains that there is man page on `git-cliff`), while `git-cliff
--help` does. The former is handled by git, which opens `man 1 git-cliff`,
where as the latter is handled by `git-cliff`, giving out the default help
output from clap.

With this change, `git cliff --help` and `git-cliff --help` still differ, but
at least they both give out a sensible result.

#### Testing the changes
- I tested the changes in this PR: **YES**

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