Rename 'output pane' to simply 'output'

Change-Id: If45e053a32855bca68dc71cb5da22f981146e45b
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/libs/qmljs/qmljsplugindumper.cpp

@@ -210,7 +210,7 @@ static QString qmldumpFailedMessage(const FilePath &libraryPath, const QString &
                              "\n"
                              "%1"
                              "\n"
-                             "Check 'General Messages' output pane for details."
+                             "Check General Messages for details."
                              ).arg(firstLines);
 }