doc: update doc and example for validator

validator/validator.go

@@ -112,7 +112,7 @@ func ContainLetter(str string) bool {
 }
 
 // IsJSON checks if the string is valid JSON.
-// Play: https://go.dev/play/p/sRS6c4K8jGk
+// Play: https://go.dev/play/p/8Kip1Itjiil
 func IsJSON(str string) bool {
 	var js json.RawMessage
 	return json.Unmarshal([]byte(str), &js) == nil
@@ -370,7 +370,7 @@ func IsGBK(data []byte) bool {
 	return true
 }
 
-// IsNumberStr check if the value is Number(integer, float) or not.
+// IsNumberStr check if the value is number(integer, float) or not.
 // Play: todo
 func IsNumber(v any) bool {
 	return IsInt(v) || IsFloat(v)

validator/validator_example_test.go

@@ -285,8 +285,8 @@ func ExampleIsIntStr() {
 func ExampleIsJSON() {
 	result1 := IsJSON("{}")
 	result2 := IsJSON("{\"name\": \"test\"}")
-	result3 := IsIntStr("")
-	result4 := IsIntStr("abc")
+	result3 := IsJSON("")
+	result4 := IsJSON("abc")
 
 	fmt.Println(result1)
 	fmt.Println(result2)