BUG: Fix unnecessary explicit itk namespace mention in Doxygen link.
BUG: Fix unnecessary explicit itk namespace mention in Doxygen link.

Remove unnecessary/redundant `itk` namespace mention in Doxygen link in
the LaTeX documentation used by the ITK SoftwareGuide.

Change-Id: Ic23a853748e02c6d85c3fc47228f09ee14fd78ea

hjmjohnson/ITK,thewtex/ITK,Kitware/ITK,vfonov/ITK,LucasGandel/ITK,stnava/ITK,fbudin69500/ITK,LucasGandel/ITK,malaterre/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,malaterre/ITK,fbudin69500/ITK,LucasGandel/ITK,stnava/ITK,spinicist/ITK,richardbeare/ITK,spinicist/ITK,vfonov/ITK,Kitware/ITK,stnava/ITK,blowekamp/ITK,Kitware/ITK,stnava/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,malaterre/ITK,richardbeare/ITK,blowekamp/ITK,spinicist/ITK,stnava/ITK,malaterre/ITK,richardbeare/ITK,vfonov/ITK,fbudin69500/ITK,BRAINSia/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,LucasGandel/ITK,stnava/ITK,BRAINSia/ITK,blowekamp/ITK,spinicist/ITK,thewtex/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,malaterre/ITK,LucasGandel/ITK,fbudin69500/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,malaterre/ITK,blowekamp/ITK,LucasGandel/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK,hjmjohnson/ITK,BRAINSia/ITK,hjmjohnson/ITK,vfonov/ITK,thewtex/ITK,Kitware/ITK,fbudin69500/ITK,spinicist/ITK,stnava/ITK,vfonov/ITK,spinicist/ITK,BRAINSia/ITK,thewtex/ITK,hjmjohnson/ITK,blowekamp/ITK,blowekamp/ITK,hjmjohnson/ITK,BRAINSia/ITK,fbudin69500/ITK,fbudin69500/ITK,malaterre/ITK,richardbeare/ITK,richardbeare/ITK,spinicist/ITK,vfonov/ITK,blowekamp/ITK,spinicist/ITK,LucasGandel/ITK,thewtex/ITK,thewtex/ITK,stnava/ITK,spinicist/ITK,fbudin69500/ITK,BRAINSia/ITK,richardbeare/ITK,LucasGandel/ITK,hjmjohnson/ITK,blowekamp/ITK,stnava/ITK,malaterre/ITK