Update specs/Freeze.md

Co-authored-by: Raymond Chen <oldnewthing@users.noreply.github.com>

Author: LiangTheDev

specs/Freeze.md

@@ -91,7 +91,7 @@ See [Sleeping Tabs FAQ](https://techcommunity.microsoft.com/t5/articles/sleeping
 for conditions that might prevent WebView from being frozen. In those situations,
 The TryFreeze operation will fail and the completed handler will be invoked with isSuccessful as false.   
 The WebView will be automatically unfrozen when it becomes visible. Therefore, the app normally doesn't have to call Unfreeze.
-The app can call `Unfreeze` and then `TryFreeze` periodically for an invisibile WebView so that the invisible WebView can sync up with
+The app can call `Unfreeze` and then `TryFreeze` periodically for an invisible WebView so that the invisible WebView can sync up with
 latest data and the page ready to show fresh content when it becomes visible.
 
 # API Notes