minor fixes

Author: philipphofmann

docs/platforms/apple/common/migration/index.mdx

@@ -82,6 +82,7 @@ For more information, see the <PlatformLink to="/profiling/#enable-ui-profiling"
   - `defaultIntegrations()`
   - `enableTracing` (use `tracesSampleRate` or `tracesSampler` instead)
   - `getStoreEndpoint()`
+  - `enablePerformanceV2` the behavior of this option is now enabled by default.
 
 #### Behavioral Breaking Changes
 
@@ -104,7 +105,7 @@ For more information, see the <PlatformLink to="/profiling/#enable-ui-profiling"
 We removed the following deprecated APIs:
 
 - `SentrySpan.setExtraValue(_:forKey:)`
-- User feedback API (use the new feedback API instead)
+- User feedback API (use the new [feedback API instead](platforms/apple/guides/ios/user-feedback/))
 - `Scope.useSpan()` (use `Scope.span` instead)
 - `SentryDebugMeta.uuid` (use `debugID` instead)
 - `SentryDebugMeta.name` (use `codeFile` instead)

docs/platforms/apple/common/tracing/instrumentation/automatic-instrumentation.mdx

@@ -118,15 +118,15 @@ The Cocoa SDK creates the following app start spans:
 - **Runtime Init to Pre Main Initializers**: from runtime init to pre main initializers.
 - **UIKit Init**: from pre main initializers to the when starting the Sentry Cocoa SDK.
 - **Application Init**: this reflects the duration of your AppDelegate `application:didFinishLaunchingWithOptions` method or [App conformer's initializer](<https://developer.apple.com/documentation/swiftui/app/main()>) when using SwiftUI, which is from when starting the Cocoa SDK to the [`didFinishLaunchingNotification`][didfinishlaunching].
-- **Initial Frame Render**: from the [`didFinishLaunchingNotification`][didfinishlaunching] to [`UIWindowDidBecomeVisibleNotification`][uiwindow]. When enabling the option `enablePerformanceV2` this is from the [`didFinishLaunchingNotification`][didfinishlaunching] until the app renders its first frame.
+- **Initial Frame Render**: from the [`didFinishLaunchingNotification`][didfinishlaunching] until the app renders its first frame. **Starting with version 9.0.0, this is the default behavior.** In versions prior to 9.0.0, this measured until [`UIWindowDidBecomeVisibleNotification`][uiwindow] unless you enabled the `enablePerformanceV2` option.
 
 ![App Start Transaction](./img/app-start-transaction.png)
 
 Cold and warm start are Mobile Vitals, which you can learn about in the [full documentation](/product/insights/mobile/mobile-vitals).
 
 ### Prewarmed App Start Tracing
 
-Starting with iOS 15, the operating system might [prewarm](https://developer.apple.com/documentation/uikit/app_and_environment/responding_to_the_launch_of_your_app/about_the_app_launch_sequence#3894431) your app by creating the process before the user opens it. Enable the `enablePreWarmedAppStartTracing` feature to collect prewarmed app starts, which will be enabled by default in V9.
+Starting with iOS 15, the operating system might [prewarm](https://developer.apple.com/documentation/uikit/app_and_environment/responding_to_the_launch_of_your_app/about_the_app_launch_sequence#3894431) your app by creating the process before the user opens it. **Starting with version 9.0.0, the SDK collects prewarmed app starts by default.** For versions prior to 9.0.0, enable the `enablePreWarmedAppStartTracing` feature to collect prewarmed app starts.
 
 When the OS prewarms your app process, it already does some of the initialization steps of a normal app start before the user taps the app icon. This can be anywhere from seconds to minutes or hours before your app is fully launched. Therefore, the SDK doesn't add the **Pre Runtime Init** and the **Runtime Init to Pre Main Initializers** spans. This approach shortens the app start duration, but it represents the time from when a user clicks the app icon to when the app is responsive.
 
@@ -139,14 +139,14 @@ With this feature, the SDK differentiates between four different app start types
 
 You can filter for different app start types in [Discover](/product/explore/discover-queries/) with `app_start_type:cold.prewarmed`, `app_start_type:warm.prewarmed`, `app_start_type:cold`, and `app_start_type:warm`.
 
-To enable prewarmed app start tracing:
+To enable prewarmed app start tracing (only needed for versions prior to 9.0.0):
 
 ```swift {tabTitle:Swift}
 import Sentry
 
 SentrySDK.start { options in
     options.dsn = "___PUBLIC_DSN___"
-    options.enablePreWarmedAppStartTracing = true
+    options.enablePreWarmedAppStartTracing = true // Enabled by default in 9.0.0+
 }
 ```
 
@@ -155,7 +155,7 @@ SentrySDK.start { options in
 
 [SentrySDK startWithConfigureOptions:^(SentryOptions *options) {
     options.dsn = @"___PUBLIC_DSN___";
-    options.enablePreWarmedAppStartTracing = YES;
+    options.enablePreWarmedAppStartTracing = YES; // Enabled by default in 9.0.0+
 }];
 ```