fix(js): specify RN support for Android and iOS (#8030)

Author: haverchuck

src/fragments/start/getting-started/reactnative/setup.mdx

@@ -1,6 +1,6 @@
 ## Create a new project
 
-To get started, initialize a new React Native project.
+To get started, initialize a new React Native project for Android or iOS.
 
 <BlockSwitcher>
 <Block name="Expo CLI">

src/pages/[platform]/start/quickstart/index.mdx

@@ -2648,7 +2648,7 @@ Before you get started, make sure you have the following installed:
 - Configure your AWS account to use with Amplify [instructions](/[platform]/start/account-setup/).
 
 
-This Quickstart guide will walk you through how to build a Todo application using [Expo](https://expo.dev/)'s TypeScript template.
+This Quickstart guide will walk you through how to build a Todo application for Android or iOS using [Expo](https://expo.dev/)'s TypeScript template.
 
   <Callout>
 

src/pages/gen1/[platform]/start/getting-started/setup/index.mdx

@@ -255,7 +255,7 @@ This runs a development server and allows us to see the output generated by the
 
 <InlineFilter filters={['react-native']}>
 
-To get started, initialize a new React Native project.
+To get started, initialize a new React Native project for Android or iOS.
 
 <BlockSwitcher>
 <Block name="Expo CLI">