Doc: Update the list of highlighted examples

Remove highlighting for a number of older and less relevant examples.
Add examples from new modules, and examples that have been visually
polished.

Task-number: QTBUG-37203
Change-Id: I4e9be9a54f1ecea3bb407c049c1d44a7c00333a6
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>

doc/global/manifest-meta.qdocconf

@@ -42,15 +42,16 @@ manifestmeta.highlighted.names      =   "QtQuick/Qt Quick Demo - Same Game" \
                                         "QtQuick/Qt Quick Demo - StocQt" \
                                         "QtQuick/Qt Quick Demo - Clocks" \
                                         "QtQuick/Qt Quick Examples - Shader Effects" \
-                                        "QtQuick/Qt Quick Examples - Text" \
-                                        "QtQuick/Qt Quick Examples - Window and Screen" \
+                                        "QtQuickExtras/Qt Quick Extras - Dashboard" \
+                                        "QtQuickExtras/Qt Quick Extras - Gallery" \
                                         "QtQuickControls/Qt Quick Controls - Gallery" \
                                         "QtQuickControls/Qt Quick Controls - Text Editor Example" \
                                         "QtQuickControls/Qt Quick Controls - Table View Example" \
                                         "QtQuickControls/Qt Quick Controls - Calendar Example" \
                                         "QtQuickDialogs/Qt Quick System Dialog Examples" \
-                                        "QtWidgets/Application Example" \
-                                        "QtWinExtras/Quick Player"
+                                        "QtWinExtras/Quick Player" \
+                                        "QtMultimedia/QML Video Shader Effects Example" \
+                                        "QtCanvas3D/Planets Example"
 
 manifestmeta.highlighted.attributes =   isHighlighted:true