Out of date documentation for initializing React Native SDK

[levibuzolic]

The documentation instructs calling DdSdkNativeInitialization.initFromNative(this.applicationContext) for Android. However initFromNative requires a ReactApplicationContext as the second argument, which is not available.

documentation/content/en/real_user_monitoring/guide/initialize-your-native-sdk-before-react-native-starts.md

Line 52 in 1145879

DdSdkNativeInitialization.initFromNative(this.applicationContext)

As seen in the latest source code for dd-sdk-reactnative

https://github.com/DataDog/dd-sdk-reactnative/blob/0031bfe3e42ff43d22c7e26668ad58a994241463/packages/core/android/src/main/kotlin/com/datadog/reactnative/DdSdkNativeInitialization.kt#L384