Implements highlighting of shortlinks like cl/123, or b/123.
Highlighting works by replacing the input Markdown using a simple
regular expression replacement.
We also considered parsing and replacing these links in the Markdown
AST, but it would have been significantly more complex (due to arena
allocation) for little upside and no obvious performance benefit.
Change-Id: I53f03fb17491046d89d0b7f605929571c11ee9a8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3082
Tested-by: BuildkiteCI
Reviewed-by: eta <eta@theta.eu.org>
Covers some of the odd things we do, specifically callouts and code
rendering.
Change-Id: Ib8542373b434b53d277b0d8c9ddb78ac7c5176a5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2689
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
