fix(doc): refer to usize::MAX instead of std::usize::MAX

src/undirected/connected_components.rs

@@ -51,7 +51,7 @@ fn find(table: &mut [usize], mut x: usize) -> usize {
 /// - A mapping from every group to its set identifier, with the identifiers being
 ///   the same ones as the ones in the previous mapping. Each group corresponds to
 ///   the identifier at the same index, except for empty group whose identifier is
-///   set to `std::usize::MAX`.
+///   set to `usize::MAX`.
 ///
 /// Note that if you have a raw undirected graph, you can build
 /// such a structure by creating a group for every vertex containing