mac: CodeHealth: Spelling correction

Bug: None
Change-Id: Id16b594268488ef9661931099da1b326138534e1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5174021
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Auto-Submit: Solomon Kinard <solomonkinard@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1243844}

base/mac/scoped_ionotificationportref.h

@@ -20,7 +20,7 @@ struct ScopedIONotificationPortRefTraits {
   }
 };
 
-}  // namepsace internal
+}  // namespace internal
 
 using ScopedIONotificationPortRef =
     ScopedGeneric<IONotificationPortRef,