DOC: Fix typo in method documentation.
DOC: Fix typo in method documentation.

Fix a typo in method documentation.

Change-Id: I43291a8734b7d65c3b85ab9f95f12e7f98f7cac8

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