Doc: Language edits
Doc: Language edits

Change-Id: I556f1011d9e5b524d1195a455279ae95e4589a5d
Reviewed-by: Jerome Pasion <c10995d24f6b454503389e8d00d837aef038985d@digia.com>

kobolabs/qtdoc,kobolabs/qtdoc,kobolabs/qtdoc,kobolabs/qtdoc