encoding/json: de-indent raw strings in remaining examples

This change fixes the remaining examples where the raw strings had
suboptimal indentation (one level too many) when viewed in godoc.

Follows CL 48910.
Fixes #21026.

Change-Id: Ifc0dae3fa899a9fff8b1ff958414e2fe6852321d
Reviewed-on: https://go-review.googlesource.com/50990
Run-TryBot: Dmitri Shuralyov <shurcool@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/encoding/json/example_test.go

@@ -36,9 +36,9 @@ func ExampleMarshal() {
 
 func ExampleUnmarshal() {
 	var jsonBlob = []byte(`[
-		{"Name": "Platypus", "Order": "Monotremata"},
-		{"Name": "Quoll",    "Order": "Dasyuromorphia"}
-	]`)
+	{"Name": "Platypus", "Order": "Monotremata"},
+	{"Name": "Quoll",    "Order": "Dasyuromorphia"}
+]`)
 	type Animal struct {
 		Name  string
 		Order string
@@ -56,12 +56,12 @@ func ExampleUnmarshal() {
 // This example uses a Decoder to decode a stream of distinct JSON values.
 func ExampleDecoder() {
 	const jsonStream = `
-		{"Name": "Ed", "Text": "Knock knock."}
-		{"Name": "Sam", "Text": "Who's there?"}
-		{"Name": "Ed", "Text": "Go fmt."}
-		{"Name": "Sam", "Text": "Go fmt who?"}
-		{"Name": "Ed", "Text": "Go fmt yourself!"}
-	`
+	{"Name": "Ed", "Text": "Knock knock."}
+	{"Name": "Sam", "Text": "Who's there?"}
+	{"Name": "Ed", "Text": "Go fmt."}
+	{"Name": "Sam", "Text": "Go fmt who?"}
+	{"Name": "Ed", "Text": "Go fmt yourself!"}
+`
 	type Message struct {
 		Name, Text string
 	}
@@ -86,8 +86,8 @@ func ExampleDecoder() {
 // This example uses a Decoder to decode a stream of distinct JSON values.
 func ExampleDecoder_Token() {
 	const jsonStream = `
-		{"Message": "Hello", "Array": [1, 2, 3], "Null": null, "Number": 1.234}
-	`
+	{"Message": "Hello", "Array": [1, 2, 3], "Null": null, "Number": 1.234}
+`
 	dec := json.NewDecoder(strings.NewReader(jsonStream))
 	for {
 		t, err := dec.Token()
@@ -191,9 +191,9 @@ func ExampleRawMessage_unmarshal() {
 	}
 
 	var j = []byte(`[
-		{"Space": "YCbCr", "Point": {"Y": 255, "Cb": 0, "Cr": -10}},
-		{"Space": "RGB",   "Point": {"R": 98, "G": 218, "B": 255}}
-	]`)
+	{"Space": "YCbCr", "Point": {"Y": 255, "Cb": 0, "Cr": -10}},
+	{"Space": "RGB",   "Point": {"R": 98, "G": 218, "B": 255}}
+]`)
 	var colors []Color
 	err := json.Unmarshal(j, &colors)
 	if err != nil {