fix: remove 3.0 from upgrade language
Created by: dadlerj
The current language here (just "or 3.0") makes it sound like all 3.0 patch releases need the docs. That's not true — it's ONLY 3.0.0
(and none of the -beta, etc. ones are included).
There are relatively few 3.0.0
instances left, so for clarity, I think we would be smart to just remove that part entirely.