Document AssetBundle and Platform exception Flutter (#4981)

Author: marandaneto

src/includes/getting-started-primer/flutter.mdx

@@ -9,6 +9,7 @@ Features:
 - Automatic native crash error tracking (using both [Android](/platforms/android/) and [iOS/macOS](/platforms/apple/)), including
     - Java, Kotlin, C, and C++ code for Android
     - ObjC, Swift, and C for iOS and macOS
+    - Flutter and Android encapsulated exceptions (PlatformException)
 - Offline storage of events
 - Events [enriched](/platforms/flutter/enriching-events/context/) with device data
 - Breadcrumbs automatically captured:
@@ -22,10 +23,11 @@ Features:
 - [User Feedback](/platforms/flutter/enriching-events/user-feedback/) provides the ability to collect user information when an event occurs.
 - [Performance Monitoring](/product/performance/) creates transactions for:
     - [HTTP requests](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#httpclient-library-instrumentation)
-    - [Routing Instumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#routing-instumentation)
+    - [Routing Instrumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#routing-instrumentation)
     - [Dio HTTP library](/platforms/dart/configuration/integrations/dio/#performance-monitoring-for-http-requests)
     - [Cold and warm app start](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#app-start-instrumentation)
     - [Slow and frozen frames](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#slow-and-frozen-frames)
+    - [AssetBundle Instrumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#assetbundle-instrumentation)
 - [Logging Integration](/platforms/dart/configuration/integrations/logging)
 - Limited support for Flutter Web, Windows, and Linux
 - Under the hood the SDK relies on the [Dart SDK](/platforms/dart/); the minimum required version is `2.12.0` and Flutter SDK version is `1.17.0`.

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

@@ -32,7 +32,7 @@ When the HTTP request throws an `Exception`, Sentry's SDK associates this except
 
 Learn more in our [Dio integration documentation](/platforms/dart/configuration/integrations/dio/#performance-monitoring-for-http-requests).
 
-### Routing Instumentation
+### Routing Instrumentation
 
 Automatic routing instrumentation can be enabled by adding an instance of `SentryNavigationObserver` to your application's `navigatorObservers`. Transactions are started automatically when routing to new pages in your application.
 
@@ -105,7 +105,7 @@ final router = GoRouter(
 );
 ```
 
-Everything else follows the [routing instrumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#routing-instumentation) setup.
+Everything else follows the [routing instrumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#routing-instrumentation) setup.
 
 ### App Start Instrumentation
 
@@ -151,7 +151,7 @@ Cold and warm start are Mobile Vitals, which you can learn about in the [full do
 
 Unresponsive UI and animation hitches annoy users and degrade the user experience. Two measurements to track these types of experiences are slow frames and frozen frames. If you want your app to run smoothly, you should try to avoid both. The SDK adds these two measurements for the transactions you capture.
 
-To start getting the Mobile Vitals data, you have to set up the [routing instrumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#routing-instumentation) or the [GoRouter instumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#gorouter-instrumentation).
+To start getting the Mobile Vitals data, you have to set up the [routing instrumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#routing-instrumentation) or the [GoRouter instrumentation](/platforms/flutter/performance/instrumentation/automatic-instrumentation/#gorouter-instrumentation).
 
 If you want to opt out, you can flip the `enableAutoPerformanceTracking` flag: