cmark.ex

59258394 - Bump ex_doc from 0.21.3 to 0.22.0

Bump ex_doc from 0.21.3 to 0.22.0 Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.21.3 to 0.22.0. - [Release notes](https://github.com/elixir-lang/ex_doc/releases) - [Changelog](https://github.com/elixir-lang/ex_doc/blob/master/CHANGELOG.md) - [Commits](https://github.com/elixir-lang/ex_doc/compare/v0.21.3...v0.22.0) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>