You can preview this rule
[here](https://sonarsource.github.io/rspec/#/rspec/S6399/csharp)
(updated a few minutes after each push).
## Review
A dedicated reviewer checked the rule description successfully for:
- [ ] logical errors and incorrect information
- [ ] information gaps and missing content
- [ ] text style and tone
- [ ] PR summary and labels follow [the
guidelines](https://github.com/SonarSource/rspec/#to-modify-an-existing-rule)
---------
Co-authored-by: daniel-teuchert-sonarsource <daniel-teuchert-sonarsource@users.noreply.github.com>
Co-authored-by: Daniel Teuchert <daniel.teuchert@sonarsource.com>
Co-authored-by: daniel-teuchert-sonarsource <141642369+daniel-teuchert-sonarsource@users.noreply.github.com>
Co-authored-by: Loris S. <91723853+loris-s-sonarsource@users.noreply.github.com>
Inline adoc files when they are included exactly once.
Also fix language tags because this inlining gives us better information
on what language the code is written in.
