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.
You can preview this rule
[here](https://sonarsource.github.io/rspec/#/rspec/S6388/azureresourcemanager)
(updated a few minutes after each push).
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Co-authored-by: rudy-regazzoni-sonarsource <rudy-regazzoni-sonarsource@users.noreply.github.com>
Co-authored-by: Rudy Regazzoni <rudy.regazzoni@sonarsource.com>
