links: option to prevent external icon (for images e.g. buttons)

[jorgeorpinel]

To prevent this:

From https://dvc.org/doc/user-guide/contributing/docs#development-environment

[rogermparent]

You can work around this issue by making a link in explicit HTML instead of Markdown. I have a PR showing how it can fix this issue at #1251

[shcheklein]

@rogermparent does it makes sense to keep the ticket open even if we apply workaround? Can we detect this type of links automatically?

[jorgeorpinel]

If that's not easy, I think we can close this. We're using the workaround for now.

[rogermparent]

It shouldn't be too hard to simply give this a real implementation, but the question is how we do so. If we change it such that external links containing only an image are exempt, do we need to implement the behavior to re-enable the link?

I don't think this issue is anything to worry about currently with the workaround, but is worth bringing up as a concern if at any point we overhaul the blog remark pipeline.

I'd say close this issue and maybe open a new one when we get a few more instances of this.

[jorgeorpinel]

Thanks for looking into it Roger. Sounds complicated, I think let's close this for now but feel free to reopen if you feel differently, guys.