QDoc: Fixed section title offset in QML basic type pages.

-QML basic type page layout is now separate from the other
 doc page layouts, but the section offset was incorrect.
-the offset is the same as the QML type pages.

Change-Id: I422e97eebe58a87c11607f2c8c5aedb10abbda7e
Task-number: QTBUG-40335
Reviewed-by: Martin Smith <martin.smith@digia.com>

src/tools/qdoc/htmlgenerator.cpp

@@ -3922,6 +3922,7 @@ int HtmlGenerator::hOffset(const Node *node)
     case Node::Namespace:
     case Node::Class:
         return 2;
+    case Node::QmlBasicType:
     case Node::QmlType:
     case Node::Document:
         return 1;