docs: Update Flutter SDK getting started guide with Android setup ins…

…tructions

docs/mobile-sdk/flutter-sdk/getting-started.md

@@ -23,6 +23,20 @@ TPStreamsSDK.initialize(orgCode: "YOUR_ORG_CODE");
 
 Make sure to replace "YOUR_ORG_CODE" with your actual organization code. This code snippet should be placed at the entry point of your application (usually in the main function) to ensure proper initialization of the TPStreamsSDK.
 
+### Android Setup
+
+In the Android directory, extend the FlutterFragmentActivity class in your MainActivity file.
+
+To do this, make the change in the following directory:
+android/app/src/main/kotlin/com/project_name/MainActivity.kt
+
+``` kotlin
+import io.flutter.embedding.android.FlutterFragmentActivity
+
+class MainActivity: FlutterFragmentActivity(){
+
+}
+```
 
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