Change default organization name to example.com in project templates (#14116)

diff --git a/packages/flutter_tools/lib/src/ios/mac.dart b/packages/flutter_tools/lib/src/ios/mac.dart
index 14fa5a3..a5639f7 100644
--- a/packages/flutter_tools/lib/src/ios/mac.dart
+++ b/packages/flutter_tools/lib/src/ios/mac.dart
@@ -393,10 +393,10 @@
   }
   if (result.xcodeBuildExecution != null &&
       result.xcodeBuildExecution.buildForPhysicalDevice &&
-      app.id?.contains('com.yourcompany') ?? false) {
+      app.id?.contains('com.example') ?? false) {
     printError('');
     printError('It appears that your application still contains the default signing identifier.');
-    printError("Try replacing 'com.yourcompany' with your signing id in Xcode:");
+    printError("Try replacing 'com.example' with your signing id in Xcode:");
     printError('  open ios/Runner.xcworkspace');
     return;
   }