Fix typo

Author: lex111

content/docs/concurrent-mode-patterns.md

@@ -727,7 +727,7 @@ By default, React always renders a consistent UI. Consider code like this:
 
 React guarantees that whenever we look at these components on the screen, they will reflect data from the same `user`. If a different `user` is passed down because of a state update, you would see them changing together. You can't ever record a screen and find a frame where they would show values from different `user`s. (If you ever run into a case like this, file a bug!)
 
-This makes sense in the vast majority of situations. Inconsistent UI is confusing and can mislead users. (For example, it would be terrible if a messager's Send button and the conversation picker pane "disagreed" about which thread is currently selected.)
+This makes sense in the vast majority of situations. Inconsistent UI is confusing and can mislead users. (For example, it would be terrible if a messenger's Send button and the conversation picker pane "disagreed" about which thread is currently selected.)
 
 However, sometimes it might be helpful to intentionally introduce an inconsistency. We could do it manually by "splitting" the state like above, but React also offers a built-in Hook for this: