[IMPROVE] Add markdown to custom fields in user Info

[yash-rajpal]

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• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Proposed changes (including videos or screenshots)

Added markdown to custom fields to render links

Issue(s)

Fixes #20005

Steps to test or reproduce

Further comments

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[ankar84]

Hey, @ggazzo @tassoevan @MartinSchoeler
Please take a review of that simple but very useful PR
Thanks!

[yash-rajpal]

@ggazzo Please review.

[ankar84]

Can you also fix that issue #19259 where long string in custom field is replaced with ... ?

[ankar84]

Hey, @ggazzo
Can you please review that PR to include it in 3.14?
Thanks!