fakevim: mention comma escape in documentation
fakevim: mention comma escape in documentation

Change-Id: I3f62b7073c3bafc37420ee447465a904070a1515
Reviewed-on: http://codereview.qt-project.org/4880
Reviewed-by: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: Leena Miettinen <885fda02d52616fec24ed5fed9b3f0568fce3ead@nokia.com>

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