Lot of documentation pages duplicate words

Let's take https://gitlab.com/help/ci/examples/code_quality.md as example.

The first line repeats the word caution twice:

CAUTION: Caution: The job definition shown below is supported on GitLab 10.4 and later versions. For earlier versions, use the old job definition.

Indeed, in the raw code, the caution word is repeated twice as well.

I suppose there was some sort of rendering for some special words?

This happens in a lot of pages for a lot of different words (tip, caution, warning, note), and it's quite annoying.

I am not sure if there should be a fix in the markdown to html code, or if the documentation has to be updated to remove all the double words