chore: update readmes (#2388)

Author: ameter

README-combine-support.md

@@ -2,16 +2,16 @@
 
 <img src="https://s3.amazonaws.com/aws-mobile-hub-images/aws-amplify-logo.png" alt="AWS Amplify" width="550" >
 
-Amplify supports iOS 13+ and macOS 10.15+, and ships with APIs that leverage Swift Concurrenty (async/await) to return values. For example, the following returns an array of type `Geo.Place` with search results for coffee shops.
+Amplify supports iOS 13+ and macOS 10.15+, and ships with APIs that leverage Swift Concurrency (async/await) to return values. For example, the following returns an array of type `Geo.Place` with search results for coffee shops.
 
 ```swift
 let places = try await Amplify.Geo.search(for "coffee")
 ```
 
-Some APIs do not return a simple result, such as those that return subscriptions or provide progress updates. In cases where multiple values are expected over time, Amplify typically provides an `AmplifyAsyncSequence` or `AmplifyAsyncThrowingSequence`. These types conform to the `AsyncSequence` protocol and can be iterated over asyncronously. For example, the following subscribes to the creation of new Todos.
+Some APIs do not return a simple result, such as those that return subscriptions or provide progress updates. In cases where multiple values are expected over time, Amplify typically provides an `AmplifyAsyncSequence` or `AmplifyAsyncThrowingSequence`. These types conform to the `AsyncSequence` protocol and can be iterated over asynchronously. For example, the following subscribes to the creation of new Todos.
 
 ```swift
-let subscription = try await Amplify.API.subscribe(
+let subscription = Amplify.API.subscribe(
     request: .subscription(of: Todo.self, type: .onCreate)
 )
 ```

README.md

@@ -1,4 +1,4 @@
-## Amplify for iOS (Developer Preview)
+## Amplify Library for Swift
 <img src="https://s3.amazonaws.com/aws-mobile-hub-images/aws-amplify-logo.png" alt="AWS Amplify" width="550" >
 
 AWS Amplify provides a declarative and easy-to-use interface across different categories of cloud operations. Our default implementation works with Amazon Web Services (AWS), but AWS Amplify is designed to be open and pluggable for any custom backend or service.
@@ -49,7 +49,7 @@ let task = awsS3.headBucket(input: input) { result in
 
 ## Platform Support
 
-Amplify supports iOS 13+ and macOS 10.15+. There are currently no plans to support Amplify on watchOS or tvOS.
+Amplify supports iOS 13+ and macOS 10.15+. Support for watchOS and tvOS is coming in future releases.
 
 ## License