* Adding an exception section covering key derivation use cases.
* Updating recommended salt length to 256 bits as recommended by NIST
* Improve title to make it explicit we don't target KDF
* Altered some small points
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Co-authored-by: Egon Okerman <egon.okerman@sonarsource.com>
When an include is not surrounded by empty lines, its content is inlined
on the same line as the adjacent content. That can lead to broken tags
and other display issues.
This PR fixes all such includes and introduces a validation step that
forbids introducing the same problem again.
