Hyperlinks in red are a good choice.
But why call out the hyperlinks so brilliantly?
Hyperlinks have been in use since the mid-90s: they're not new. They don't need to be in brilliant red. If you want to call them out, why not use the industry-standard blue?
The ASL rulebook already has a lot of non-standard formatting: there are
[italicized bracketed EXC asides], Capitalized Words, acronyms (PFPh, FG, LMG), symbols (vehicle-star, leadership triangle, "?"), cross-references (C2.2401), words in all-caps (ADJACENT, SMOKE, IN), letter-number combos (B8/X12, DR/dr, US#, +3, 27H6-H7). And sentences are long, with many clauses and sub-clauses, running on for many lines. And many words have a precise ASL-meaning (throw, advance, location). I like it, but there's no denying it's complicated to read. And now there's red ink on top of all that, and it highlights something immaterial to the sense of the paragraph.