fix external api name

packages/webview_flutter/webview_flutter_wkwebview/darwin/webview_flutter_wkwebview/Sources/webview_flutter_wkwebview/WebViewFlutterWKWebViewExternalAPI.swift

@@ -18,7 +18,7 @@ import WebKit
 /// changes to the class that are not backwards compatible will only be made with a major version
 /// change of the plugin. Native code other than this external API does not follow breaking change
 /// conventions, so app or plugin clients should not use any other native APIs.
-@objc(WebViewFlutterWKWebViewExternalAPI)
+@objc(FWFWebViewFlutterWKWebViewExternalAPI)
 public class FWFWebViewFlutterWKWebViewExternalAPI: NSObject {
   /// Retrieves the `WKWebView` that is associated with `identifier`.
   ///

packages/webview_flutter/webview_flutter_wkwebview/example/ios/Podfile

@@ -29,6 +29,7 @@ flutter_ios_podfile_setup
 
 target 'Runner' do
   flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+
   target 'RunnerTests' do
     inherit! :search_paths
   end