Send/Sync type parameters come after const parameters in docs

[varkor]

rust/src/test/rustdoc/generic-const.rs

Lines 12 to 13 in 7212685

	// @has foo/struct.VSet.html '//h3[@id="impl-Send"]/code' 'impl<const ORDER: Order, T> Send for VSet<T, ORDER>'
	// @has foo/struct.VSet.html '//h3[@id="impl-Sync"]/code' 'impl<const ORDER: Order, T> Sync for VSet<T, ORDER>'

Const parameters should always be trailing (at least with respect to type/lifetime parameters). I'm not sure whether this is specifically a rustdoc issue or not yet.

[GuillaumeGomez]

Strange since we read them as they come... So we have to force their position at the end? Let's go for it then...