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

tianon/debian-golang,dsriram/golang,dsriram/golang,bdwalton/debian-golang,bdwalton/debian-golang,h8liu/golang,ssrl/go,ssrl/go,nightlyone/golang,h8liu/golang,pombredanne/go-deleteme,h8liu/golang,bdwalton/debian-golang,apparentlymart/golang,tv42/old-go,nightlyone/golang,tv42/old-go,gnanderson/go,nightlyone/golang,gnanderson/go,pombredanne/go-deleteme,ssrl/go,bdwalton/debian-golang,apparentlymart/golang,bdwalton/debian-golang,apparentlymart/golang,pombredanne/go-deleteme,tianon/debian-golang,h8liu/golang,h8liu/golang,dsriram/golang,bdwalton/debian-golang,tianon/debian-golang,ssrl/go,tv42/old-go,pombredanne/go-deleteme,bdwalton/debian-golang,ssrl/go,apparentlymart/golang,gnanderson/go,nightlyone/golang,dsriram/golang,ssrl/go,tianon/debian-golang,nightlyone/golang,pombredanne/go-deleteme,dsriram/golang,pombredanne/go-deleteme,gnanderson/go,gnanderson/go,gnanderson/go,bdwalton/debian-golang,tianon/debian-golang,apparentlymart/golang,h8liu/golang,nightlyone/golang,tv42/old-go,tianon/debian-golang,h8liu/golang,tianon/debian-golang,tv42/old-go,apparentlymart/golang,pombredanne/go-deleteme,nightlyone/golang,ssrl/go,tv42/old-go,tianon/debian-golang,dsriram/golang,tv42/old-go,gnanderson/go,apparentlymart/golang,dsriram/golang