template: remove reference to json-template
template: remove reference to json-template

Rather than confuse people by linking to a spec we
don't fully support, let them just use the package docs.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/1016041

sanjosh/sanjos100-tipc,rdp/rogerpack2005-golang,Triskite/willstone-goclone,sanjosh/sanjos100-tipc,npe9/noahevans-go9,scirelli/scirelli-go,d0f/go-zh,Triskite/willstone-goclone,rdp/rogerpack2005-golang,mhennings/marcohennings-go,scirelli/scirelli-go,npe9/noahevans-go9,bryanxu/go-zh,bryanxu/go-zh,Triskite/willstone-goclone,scirelli/scirelli-go,Triskite/willstone-goclone,rdp/rogerpack2005-golang,glycerine/jeaten-go-arrayof-structof,webfd/go-zh,glycerine/jeaten-go-arrayof-structof,webfd/go-zh,sanjosh/sanjos100-tipc,bryanxu/go-zh,bryanxu/go-zh,mhennings/marcohennings-go,npe9/noahevans-go9,rflanagan/reginaldflanagan-project1,d0f/go-zh,Triskite/willstone-goclone,rflanagan/reginaldflanagan-project1,rflanagan/reginaldflanagan-project1,npe9/noahevans-go9,mhennings/marcohennings-go,rflanagan/reginaldflanagan-project1,npe9/noahevans-go9,glycerine/jeaten-go-arrayof-structof,mhennings/marcohennings-go,d0f/go-zh,webfd/go-zh,d0f/go-zh,scirelli/scirelli-go,d0f/go-zh,rdp/rogerpack2005-golang,sanjosh/sanjos100-tipc,mhennings/marcohennings-go,glycerine/jeaten-go-arrayof-structof,sanjosh/sanjos100-tipc,glycerine/jeaten-go-arrayof-structof,mhennings/marcohennings-go,rdp/rogerpack2005-golang,webfd/go-zh,d0f/go-zh,bryanxu/go-zh,Triskite/willstone-goclone,glycerine/jeaten-go-arrayof-structof,mhennings/marcohennings-go,d0f/go-zh,scirelli/scirelli-go,bryanxu/go-zh,sanjosh/sanjos100-tipc,webfd/go-zh,bryanxu/go-zh,bryanxu/go-zh,Triskite/willstone-goclone,rflanagan/reginaldflanagan-project1,rdp/rogerpack2005-golang,scirelli/scirelli-go,sanjosh/sanjos100-tipc,npe9/noahevans-go9,sanjosh/sanjos100-tipc,Triskite/willstone-goclone,webfd/go-zh,mhennings/marcohennings-go,npe9/noahevans-go9,scirelli/scirelli-go,d0f/go-zh,rflanagan/reginaldflanagan-project1,rdp/rogerpack2005-golang,webfd/go-zh,glycerine/jeaten-go-arrayof-structof,npe9/noahevans-go9,rdp/rogerpack2005-golang,glycerine/jeaten-go-arrayof-structof,rflanagan/reginaldflanagan-project1,webfd/go-zh,scirelli/scirelli-go,rflanagan/reginaldflanagan-project1