DOC: ITK 5 Migration Guide grammar tweaks
DOC: ITK 5 Migration Guide grammar tweaks

Change-Id: Ia83835e7953af09373573812834c21ea60fdfd51

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