Doc: Update info about Text and Control properties

Task-number: QDS-4167
Change-Id: Ic691d848e93b964dad89bd1196ee86cdbd3956be
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

doc/qtcreator/src/qtquick/library/qtquick-controls.qdoc

@@ -556,11 +556,14 @@
     default, they do not snap to step size, but you can set them to snap to it
     either while being dragged or after being released.
 
+    You can set slider orientation to horizontal or vertical in the
+    \uicontrol Orientation field.
+
     Select the \uicontrol Live check box to provide live updates of the value
     properties.
 
-    You can set slider orientation to horizontal or vertical in the
+    Modify the \uicontrol {Touch drag threshold} to determine the threshold at
-    \uicontrol Orientation field.
+    which a touch drag event will be initiated.
 
     For more information, watch the following video:
 

doc/qtcreator/src/qtquick/library/qtquick-text.qdoc

@@ -78,7 +78,8 @@
     size, emphasis, aligment, and spacing of the text. Specify the font
     size in either points or pixels in the \uicontrol Size field.
 
-    \image qtquick-designer-text-properties.png "Text component properties"
+    \image qtquick-designer-text-properties.png "Text component general properties"
+    \image qtquick-designer-properties-font.png "Text component font properties"
 
     To display custom fonts in the list of available fonts in the
     \uicontrol Font field, you need to first add them to \l Library: