fix(apple): Mention class name for APM (#4934)

Mention that the class name of the UIViewController must contain
ViewController.

Author: philipphofmann

src/platforms/apple/common/performance/instrumentation/automatic-instrumentation.mdx

@@ -14,7 +14,7 @@ Capturing transactions requires that you first <PlatformLink to="/performance/">
 
 This feature is available for iOS, tvOS, and Mac Catalyst, and only works for UIViewControllers.
 
-The UIViewController Instrumentation, once enabled, captures transactions when your app loads an [UIViewController][UIViewController], which is in-app and a subclass of UIViewController. Nevertheless, the SDK doesn't capture transactions for UIViewControllers of third-party libraries or SwiftUI.
+The UIViewController Instrumentation, once enabled, captures transactions when your app loads an [UIViewController][UIViewController], which is in-app, a subclass of UIViewController, and the class name contains `ViewController`. Nevertheless, the SDK doesn't capture transactions for UIViewControllers of third-party libraries or SwiftUI.
 The SDK sets the transaction name to the name of the ViewController, including the module — for example, `Your_App.MainViewController` — and the transaction operation to `ui.load`.
 
 The SDK creates spans to provide insight into the time consumed by each of the methods shown in the screenshot below. Due to implementation limitations, the SDK only adds a span for loadView if the instrumented view controller implements it. The SDK adds spans for all other methods, whether you implement them in your view controller or not.