QQuickView doc improvements.
QQuickView doc improvements.

Task-number: QTBUG-23193
Change-Id: I8ae081256dabe838e88d1d11713d99ed48b5a0d5
Reviewed-by: Bea Lam <3b8b412f85e38e2fbf2a7d737c89d787c51aca40@nokia.com>

qmlc/qtdeclarative,jfaust/qtdeclarative,corngood/qtdeclarative,qmlc/qtdeclarative,matthewvogt/qtdeclarative,jfaust/qtdeclarative,corngood/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,jfaust/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,jfaust/qtdeclarative,matthewvogt/qtdeclarative,jfaust/qtdeclarative,matthewvogt/qtdeclarative,corngood/qtdeclarative,corngood/qtdeclarative,crobertd/qtdeclarative,crobertd/qtdeclarative,crobertd/qtdeclarative,qmlc/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,corngood/qtdeclarative,qmlc/qtdeclarative,crobertd/qtdeclarative,mgrunditz/qtdeclarative-2d,jfaust/qtdeclarative,mgrunditz/qtdeclarative-2d,corngood/qtdeclarative,jfaust/qtdeclarative,matthewvogt/qtdeclarative,mgrunditz/qtdeclarative-2d,crobertd/qtdeclarative,crobertd/qtdeclarative,mgrunditz/qtdeclarative-2d,matthewvogt/qtdeclarative,qmlc/qtdeclarative,matthewvogt/qtdeclarative,corngood/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,crobertd/qtdeclarative