Underline is not enough to distinguish links

Not a regression because there is no issue in Cristal 0.12, where the links have the default browser style.
Caused by CRISTAL-300
This issue is still here to block the release before introducing a regression.

Reproduction steps

1. create a content with a typo and make it a link
2. observe the result

Expected

The link is easy to spot

Actual

The link is only distinguished by a small dotted underline.

In my case, because of the typo, the small dotted underline is hidden by a big red line (see screenshot below)

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