Remove nio2.0 branch reference in README.md link

Author: Andrea-Scuderi

README.md

@@ -14,7 +14,7 @@ The project contains also some Examples:
 
 - [HelloWorld](https://github.com/swift-sprinter/aws-lambda-swift-sprinter/blob/master/Examples/HelloWorld): A basic Lambda Swift example
 - [HTTPSRequest](https://github.com/swift-sprinter/aws-lambda-swift-sprinter/blob/master/Examples/HTTPSRequest): A basic example showing how to perform an HTTPS request from the Swift Lambda using the [LambdaSwiftSprinterNioPlugin](https://github.com/swift-sprinter/aws-lambda-swift-sprinter-nio-plugin)
-- [S3Test](https://github.com/swift-sprinter/aws-lambda-swift-sprinter/blob/master/Examples/S3Test): A basic examle showing how to access an S3 bucket from the Swift Lambda using [https://github.com/swift-aws/aws-sdk-swift](https://github.com/swift-aws/aws-sdk-swift/tree/nio2.0).
+- [S3Test](https://github.com/swift-sprinter/aws-lambda-swift-sprinter/blob/master/Examples/S3Test): A basic examle showing how to access an S3 bucket from the Swift Lambda using [https://github.com/swift-aws/aws-sdk-swift](https://github.com/swift-aws/aws-sdk-swift).
 
 # Introduction