Render: fix examples that switch namespaces.

[sbmlsecretary]

A couple examples in the render specifiation switch from using the 'render:' namespace to using the default namespace. It should be consistent, and use just one or the other.

Page 19:
<render:style render:id="style_1" render:roleList="Parameter">
...
</render:style>

Page 20:
<render:style render:id="style_1" render:typeList="SPECIESGLYPH SPECIESREFERENCEGLYPH">
...
</render:style>

Reported by: luciansmith

Original Ticket: sbml/sbml-specifications//355