[FIX] update ktv copy right link

Author: HeZhengQing

iOS/APIExample-SwiftUI/APIExample-SwiftUI/Examples/Advanced/KtvCopyrightMusic/KtvCopyrightMusic.swift

@@ -11,7 +11,7 @@ struct KtvCopyrightMusic: View {
     var body: some View {
         ZStack {
             Button("Ktv copyright music".localized) {
-                let urlString = "https://doc.shengwang.cn/doc/online-ktv/ios/ktv-scenario/get-started/integrate-ktvapi"
+                let urlString = "https://docs.agora.io/en/interactive-live-streaming/overview/product-overview?platform=ios"
 
                 if let url = URL(string: urlString) {
                     UIApplication.shared.open(url)

iOS/APIExample/APIExample/Examples/Advanced/KtvCopyrightMusic/KtvCopyrightMusic.swift

@@ -10,7 +10,7 @@ import UIKit
 
 class KtvCopyrightMusic: UIViewController {
 
-    private let urlString = "https://doc.shengwang.cn/doc/online-ktv/ios/ktv-scenario/get-started/integrate-ktvapi"
+    private let urlString = "https://docs.agora.io/en/interactive-live-streaming/overview/product-overview?platform=ios"
 
     override func viewDidLoad() {
         super.viewDidLoad()