DOC: add \endwiki command to end a wiki section in doxygen doc
DOC: add \endwiki command to end a wiki section in doxygen doc

typical usage:

\wiki
\wikiexample{links1,description1}
\wikiexample{links2,description2}
\wikiexample{links3,description3}
\endwiki

Change-Id: I37f951d4c97aaf7c07eebbcbdcb427fdd0a8da1c

zachary-williamson/ITK,msmolens/ITK,BlueBrain/ITK,hendradarwin/ITK,fuentesdt/InsightToolkit-dev,jmerkow/ITK,fuentesdt/InsightToolkit-dev,CapeDrew/DITK,hinerm/ITK,spinicist/ITK,jmerkow/ITK,hjmjohnson/ITK,wkjeong/ITK,hendradarwin/ITK,fedral/ITK,GEHC-Surgery/ITK,PlutoniumHeart/ITK,Kitware/ITK,biotrump/ITK,PlutoniumHeart/ITK,thewtex/ITK,CapeDrew/DITK,hendradarwin/ITK,richardbeare/ITK,wkjeong/ITK,fedral/ITK,spinicist/ITK,spinicist/ITK,paulnovo/ITK,jmerkow/ITK,blowekamp/ITK,blowekamp/ITK,msmolens/ITK,blowekamp/ITK,hjmjohnson/ITK,zachary-williamson/ITK,thewtex/ITK,zachary-williamson/ITK,InsightSoftwareConsortium/ITK,ajjl/ITK,BlueBrain/ITK,BlueBrain/ITK,fedral/ITK,GEHC-Surgery/ITK,CapeDrew/DITK,stnava/ITK,rhgong/itk-with-dom,malaterre/ITK,msmolens/ITK,hinerm/ITK,cpatrick/ITK-RemoteIO,LucHermitte/ITK,atsnyder/ITK,vfonov/ITK,stnava/ITK,zachary-williamson/ITK,zachary-williamson/ITK,malaterre/ITK,zachary-williamson/ITK,paulnovo/ITK,fbudin69500/ITK,hjmjohnson/ITK,LucHermitte/ITK,hjmjohnson/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,rhgong/itk-with-dom,blowekamp/ITK,Kitware/ITK,itkvideo/ITK,atsnyder/ITK,CapeDrew/DITK,hinerm/ITK,thewtex/ITK,BlueBrain/ITK,InsightSoftwareConsortium/ITK,LucasGandel/ITK,zachary-williamson/ITK,fuentesdt/InsightToolkit-dev,InsightSoftwareConsortium/ITK,hinerm/ITK,ajjl/ITK,spinicist/ITK,fbudin69500/ITK,jcfr/ITK,fuentesdt/InsightToolkit-dev,biotrump/ITK,BlueBrain/ITK,heimdali/ITK,rhgong/itk-with-dom,hendradarwin/ITK,jmerkow/ITK,biotrump/ITK,Kitware/ITK,thewtex/ITK,fuentesdt/InsightToolkit-dev,PlutoniumHeart/ITK,heimdali/ITK,vfonov/ITK,malaterre/ITK,paulnovo/ITK,fedral/ITK,InsightSoftwareConsortium/ITK,stnava/ITK,rhgong/itk-with-dom,CapeDrew/DITK,eile/ITK,fuentesdt/InsightToolkit-dev,stnava/ITK,eile/ITK,CapeDrew/DCMTK-ITK,rhgong/itk-with-dom,ajjl/ITK,BRAINSia/ITK,thewtex/ITK,spinicist/ITK,malaterre/ITK,atsnyder/ITK,jcfr/ITK,BRAINSia/ITK,CapeDrew/DCMTK-ITK,ajjl/ITK,cpatrick/ITK-RemoteIO,msmolens/ITK,heimdali/ITK,fbudin69500/ITK,itkvideo/ITK,spinicist/ITK,CapeDrew/DCMTK-ITK,PlutoniumHeart/ITK,LucasGandel/ITK,spinicist/ITK,PlutoniumHeart/ITK,eile/ITK,BRAINSia/ITK,eile/ITK,eile/ITK,LucasGandel/ITK,LucasGandel/ITK,ajjl/ITK,hjmjohnson/ITK,eile/ITK,atsnyder/ITK,Kitware/ITK,jcfr/ITK,LucHermitte/ITK,wkjeong/ITK,thewtex/ITK,heimdali/ITK,Kitware/ITK,itkvideo/ITK,GEHC-Surgery/ITK,msmolens/ITK,fuentesdt/InsightToolkit-dev,Kitware/ITK,jcfr/ITK,richardbeare/ITK,fbudin69500/ITK,hjmjohnson/ITK,rhgong/itk-with-dom,BlueBrain/ITK,fuentesdt/InsightToolkit-dev,fedral/ITK,eile/ITK,jmerkow/ITK,InsightSoftwareConsortium/ITK,atsnyder/ITK,fedral/ITK,fbudin69500/ITK,cpatrick/ITK-RemoteIO,paulnovo/ITK,Kitware/ITK,GEHC-Surgery/ITK,hinerm/ITK,fedral/ITK,GEHC-Surgery/ITK,CapeDrew/DITK,wkjeong/ITK,itkvideo/ITK,jmerkow/ITK,jmerkow/ITK,itkvideo/ITK,CapeDrew/DCMTK-ITK,BlueBrain/ITK,LucHermitte/ITK,CapeDrew/DCMTK-ITK,fuentesdt/InsightToolkit-dev,wkjeong/ITK,richardbeare/ITK,CapeDrew/DCMTK-ITK,biotrump/ITK,jcfr/ITK,cpatrick/ITK-RemoteIO,vfonov/ITK,msmolens/ITK,CapeDrew/DITK,GEHC-Surgery/ITK,cpatrick/ITK-RemoteIO,hinerm/ITK,vfonov/ITK,itkvideo/ITK,blowekamp/ITK,ajjl/ITK,fedral/ITK,paulnovo/ITK,paulnovo/ITK,LucHermitte/ITK,PlutoniumHeart/ITK,biotrump/ITK,malaterre/ITK,biotrump/ITK,CapeDrew/DCMTK-ITK,vfonov/ITK,zachary-williamson/ITK,hendradarwin/ITK,LucasGandel/ITK,cpatrick/ITK-RemoteIO,heimdali/ITK,hinerm/ITK,stnava/ITK,CapeDrew/DCMTK-ITK,rhgong/itk-with-dom,stnava/ITK,hendradarwin/ITK,wkjeong/ITK,biotrump/ITK,heimdali/ITK,spinicist/ITK,msmolens/ITK,jcfr/ITK,hinerm/ITK,jcfr/ITK,paulnovo/ITK,zachary-williamson/ITK,fbudin69500/ITK,stnava/ITK,ajjl/ITK,stnava/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,atsnyder/ITK,rhgong/itk-with-dom,LucHermitte/ITK,heimdali/ITK,cpatrick/ITK-RemoteIO,jmerkow/ITK,richardbeare/ITK,LucHermitte/ITK,ajjl/ITK,LucasGandel/ITK,atsnyder/ITK,LucasGandel/ITK,blowekamp/ITK,LucasGandel/ITK,malaterre/ITK,wkjeong/ITK,LucHermitte/ITK,BlueBrain/ITK,heimdali/ITK,fbudin69500/ITK,jcfr/ITK,fbudin69500/ITK,BRAINSia/ITK,eile/ITK,malaterre/ITK,hjmjohnson/ITK,richardbeare/ITK,BRAINSia/ITK,hinerm/ITK,richardbeare/ITK,atsnyder/ITK,richardbeare/ITK,vfonov/ITK,blowekamp/ITK,itkvideo/ITK,itkvideo/ITK,atsnyder/ITK,thewtex/ITK,BRAINSia/ITK,GEHC-Surgery/ITK,biotrump/ITK,GEHC-Surgery/ITK,CapeDrew/DCMTK-ITK,CapeDrew/DITK,stnava/ITK,hendradarwin/ITK,wkjeong/ITK,spinicist/ITK,PlutoniumHeart/ITK,cpatrick/ITK-RemoteIO,PlutoniumHeart/ITK,CapeDrew/DITK,hendradarwin/ITK,vfonov/ITK,vfonov/ITK,malaterre/ITK,paulnovo/ITK,BRAINSia/ITK,eile/ITK,msmolens/ITK,itkvideo/ITK,blowekamp/ITK