Mouse over criteria in an achievement converts the link to quest instead of achievement.
Reproduction example:
Open achievement log
Search for Periodic Destruction and open that achievement so you can see the criteria
Mouse over 'Osgen' entry
Hit the hotkey for creating a link
You will now get a link to a quest instead of an achievement
Note:
1, I did not have any other addons enabled
There are several types of "criteria" for different types of achievements, some just don't create any link at all (such as: https://www.wowhead.com/achievement=10749)
Mouse over criteria in an achievement converts the link to quest instead of achievement.
Reproduction example:
Note: 1, I did not have any other addons enabled