Doc fix

Co-Authored-By: lorentey <[email protected]>

Author: natecook1000

stdlib/public/core/Hashable.swift

@@ -107,7 +107,7 @@ public protocol Hashable : Equatable {
   /// Hash values are not guaranteed to be equal across different executions of
   /// your program. Do not save hash values to use during a future execution.
   ///
-  /// - Important: `hashValue` is deprecated as a Hashable requirement. To
+  /// - Important: `hashValue` is deprecated as a `Hashable` requirement. To
   ///   conform to `Hashable`, implement the `hash(into:)` requirement instead.
   var hashValue: Int { get }