Fix the JSON examples, especially the quotes and comma after "tag" in the second and third line

from:

{"tag":"obj", "href":"/a/", "nodes":[ {"tag","obj", "name":"b", "href":"b"}

, "nodes":[

{"tag","obj", "name", "c"}

,

{"tag","ref", "name", "d", "href":"d"}

, ]
}] }

to:

{
"tag" : "obj",
"href" : "/a/",
"nodes" : [ {
"tag" : "obj",
"name" : "b",
"href" : "b",
"nodes" : [

{ "tag" : "obj", "name" : "c" }

,

{ "tag" : "ref", "name" : "d", "href" : "d" }

]
} ]
}