COMP: Content not permitted in image:: directive.

ITKExamples-build/src/Segmentation/LevelSets/SegmentWithGeodesicActiveContourLevelSet/Documentation.rst:33:
ERROR: Error in "image" directive:
no content permitted.

Change-Id: I99d9e7474be421732145fb548b1cc1456630facf
Merge "COMP: Content not permitted in image:: directive."