Fix typo in macchangeqt help.

Task-number: QTBUG-34783

Change-Id: I8f6ff878e900f9684c5dd595fbc720d0a7d82330
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>

src/macdeployqt/macchangeqt/main.cpp

@@ -65,7 +65,7 @@ int main(int argc, char **argv)
     }
 
     if (argc != (3 + optionsSpecified)) {
-        qDebug() << "Changeqt: changes witch Qt frameworks an application links against.";
+        qDebug() << "Changeqt: changes which Qt frameworks an application links against.";
         qDebug() << "Usage: changeqt app-bundle qt-dir <-verbose=[0-3]>";
         return 0;
     }