Merge topic 'refactor-documentation-formatter'

dd0142e6d0 cmDocumentationFormatter: Refactor the `PrintFormatted()` method
ef88ec41f3 testDocumentationFormatter: Add some more test cases

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !9979