QDoc: Add support for methods in QML basic types

This page uses headers and inline code to emulate C++ method documentation: http://qt-project.org/doc/qt-5/qml-geoshape.html

    \section2 Methods
    \section3 contains()
    \code
    bool contains(coordinate coord)
    \endcode

    Returns true if...

This page uses a table to list its methods: http://qt-project.org/doc/qt-5/qml-vector2d.html

Both are human-readable, but they are presented inconsistently and the individual methods are cannot be linked to using normal function notation.

e.g. Within the GeoShape page, this fails to link:

\l{contains()}

...while this works:

\l{contains}{contains()}