Doxygen related changes

	modified:   pandora_vision_hole_detector/include/hole_fusion_node/hole_fusion.h
	modified:   pandora_vision_hole_detector/include/hole_fusion_node/hole_merger.h
	modified:   pandora_vision_hole_detector/include/hole_fusion_node/rgb_filters.h
	modified:   pandora_vision_hole_detector/include/utils/blob_detection.h
	modified:   pandora_vision_hole_detector/include/utils/edge_detection.h
	modified:   pandora_vision_hole_detector/include/utils/hole_filters.h
	modified:   pandora_vision_hole_detector/include/utils/holes_conveyor.h
	modified:   pandora_vision_hole_detector/include/utils/noise_elimination.h
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/hole_fusion.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/hole_merger.cpp
	modified:   pandora_vision_hole_detector/src/hole_fusion_node/rgb_filters.cpp
	modified:   pandora_vision_hole_detector/src/utils/blob_detection.cpp
	modified:   pandora_vision_hole_detector/src/utils/edge_detection.cpp
	modified:   pandora_vision_hole_detector/src/utils/hole_filters.cpp
	modified:   pandora_vision_hole_detector/src/utils/holes_conveyor.cpp
	modified:   pandora_vision_hole_detector/src/utils/noise_elimination.cpp