Update calling-sdk-features.md

Author: sloanster

articles/communication-services/concepts/voice-video-calling/calling-sdk-features.md

@@ -136,15 +136,12 @@ Running JavaScript Calling SDK on these platforms isn't actively tested, it may
 ## Android Calling SDK support
 
 - Support for Android API Level 21 or Higher
-
 - Support for Java 7 or higher
-
 - Support for Android Studio 2.0
 
 ## iOS Calling SDK support
 
 - Support for iOS 10.0+ at build time, and iOS 12.0+ at run time
-
 - Xcode 12.0+
 
 ## Calling client - browser security model