fix typo

Author: moritzlang

docs/platforms/react-native/tracing/instrumentation/expo-router.mdx

@@ -16,7 +16,7 @@ import { Slot, useNavigationContainerRef } from 'expo-router';
 import Constants, { ExecutionEnvironment } from 'expo-constants';
 import * as Sentry from '@sentry/react-native';
 
-const navigationIntegration = Sentry.reactNavigationintegration({
+const navigationIntegration = Sentry.reactNavigationIntegration({
   enableTimeToInitialDisplay: Constants.executionEnvironment === ExecutionEnvironment.StoreClient, // Only in native builds, not in Expo Go.
 });