Links do not meet WCAG guidelines in dark mode

[kijana2204]

E.g. the Deprecated in v0.156.0 here is invisible https://gohugo.io/methods/site/sites/

[jmooring]

This is what I see from Edge, Chrome, Safari, and Firefox:

[kijana2204]

Yes. The blue is too dark.

[jmooring]

There's a bit of difference between "invisible" and "too dark", but thanks for the feedback.

Notes:

• The current contrast ratio is 2.08
• It needs to be >= 4.5 for WCAG AA
• The link color in dark mode is inaccessible in other contexts too; the problem is not specific to admonitions or badges.