fixup! docs: Correct terminology in std::cmp

Corrected typo: "Mathematicaly speaking" -> "Mathematically speaking"

Author: JanBeh

library/core/src/cmp.rs

@@ -694,7 +694,7 @@ impl<T: Clone> Clone for Reverse<T> {
 /// - exactly one of `a < b`, `a == b` or `a > b` is true; and
 /// - `<` is transitive: `a < b` and `b < c` implies `a < c`. The same must hold for both `==` and `>`.
 ///
-/// Mathematicaly speaking, the `<` operator defines a strict [weak order]. In
+/// Mathematically speaking, the `<` operator defines a strict [weak order]. In
 /// cases where `==` conforms to mathematical equality, it also defines a
 /// strict [total order].
 ///