correct the formatting for the description (microsoft#564)

correct the formating for the description

Author: impanda-cookie

docs/rnm-getting-started.md

@@ -5,7 +5,7 @@ title: Get Started with macOS
 
 This guide will help you get started on setting up your very first React Native for macOS app.
 
->** Latest stable version available for React Native for macOS is 0.63**
+> **Latest stable version available for React Native for macOS is 0.63**
 Please visit the [0.63 version of the Getting Started guide](https://microsoft.github.io/react-native-windows/docs/0.63/rnm-getting-started) to build React Native for macOS apps.
 
 For information around how to set up: