Fixed indentation for code snippet
Fixed indentation for code snippet

Due to incorrect indentation, the code snippet was not being formatted correctly as code.
scrawl/osg,jtorresfabra/osg,scrawl/osg,scrawl/osg,jtorresfabra/osg,marchelbling/osg,openscenegraph/osg,tomasthoresen/osg,marchelbling/osg,marchelbling/osg,tomasthoresen/osg,tomasthoresen/osg,openscenegraph/osg,scrawl/osg,tomasthoresen/osg,openscenegraph/osg,marchelbling/osg,openscenegraph/osg,jtorresfabra/osg,jtorresfabra/osg