LibWeb: Fix typos - act II

Author: https://github.com/szepeviktor
Commit: 5cc371d54c
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4264
Reviewed-by: https://github.com/AtkinsSJ ✅

Libraries/LibWeb/UIEvents/KeyboardEvent.cpp

@@ -307,7 +307,7 @@ static ErrorOr<String> get_event_key(KeyCode platform_key, u32 code_point)
 
     // FIXME: 4. Else, if the key event has any modifier keys other than glyph modifier keys, then
     // FIXME:     1. Set key to the key string that would have been generated by this event if it had been typed with all
-    //               modifer keys removed except for glyph modifier keys.
+    //               modifier keys removed except for glyph modifier keys.
 
     // 5. Return key as the key attribute value for this key event.
     return "Unidentified"_string;