Fixed inaccurate comment in GafferSceneTest.CustomOptionsTest.
Fixed inaccurate comment in GafferSceneTest.CustomOptionsTest.

chippey/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,cedriclaunay/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,lucienfostier/gaffer,appleseedhq/gaffer,goddardl/gaffer,andrewkaufman/gaffer,hradec/gaffer,chippey/gaffer,GafferHQ/gaffer,ivanimanishi/gaffer,boberfly/gaffer,boberfly/gaffer,chippey/gaffer,andrewkaufman/gaffer,goddardl/gaffer,cedriclaunay/gaffer,ImageEngine/gaffer,cedriclaunay/gaffer,GafferHQ/gaffer,hradec/gaffer,appleseedhq/gaffer,ImageEngine/gaffer,ivanimanishi/gaffer,boberfly/gaffer,hradec/gaffer,appleseedhq/gaffer,hradec/gaffer,GafferHQ/gaffer,boberfly/gaffer,ivanimanishi/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,ivanimanishi/gaffer,goddardl/gaffer,hradec/gaffer,appleseedhq/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,chippey/gaffer,cedriclaunay/gaffer,johnhaddon/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,goddardl/gaffer