Doc: Highlight the Qt Quick Virtual Keyboard example

Task-number: QTBUG-60664
Change-Id: If27459f44dbd4c4c7f5f6d0d8d8826f3c7f5a030
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
Reviewed-by: Nico Vertriest <nico.vertriest@qt.io>

src/virtualkeyboard/doc/qtvirtualkeyboard.qdocconf

@@ -13,6 +13,9 @@ excludedirs += ../content/layouts \
 exampledirs += ../../../examples/virtualkeyboard \
     snippets
 examplesinstallpath = virtualkeyboard
+
+manifestmeta.highlighted.names = "QtVirtualKeyboard/Qt Quick Virtual Keyboard - Basic Example"
+
 imagedirs += images
 
 depends += qtdoc qtcore qtgui qtqml qtquick