All privilege pages on MSO are wikis that periodically get pushed out to the entire network. They're also one type of post that doesn't currently work with suggested edits. Apparently you need editing privileges here on MSO to edit them.
Wouldn't it make sense to enable suggested edits for privilege wikis? A lot of users across the network view them. If they notice errors or things that could be improved, they either don't realize that they're community-editable, or they lack the rep to actually carry out improvements themselves — so they create new meta topics about it.