update swift 6 docs

Author: meech-ward

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-      - uses: swift-actions/setup-swift@v1
+      - uses: SwiftyLab/setup-swift@latest
 
       - name: Checkout code
         uses: actions/checkout@v2

README.md

@@ -2,7 +2,7 @@
 
 ![Build and Test](https://github.com/meech-ward/AsyncCoreBluetooth/actions/workflows/build.yml/badge.svg)
 
-This library is wrapper around [CoreBluetooth](https://developer.apple.com/documentation/corebluetooth) and [CoreBluetoothMock](https://github.com/NordicSemiconductor/IOS-CoreBluetooth-Mock) that allows you to write your core bluetooth code using swift concurrency. It also plays nice with SwiftUI.
+This library is a Swift 6 wrapper around [CoreBluetooth](https://developer.apple.com/documentation/corebluetooth) and [CoreBluetoothMock](https://github.com/NordicSemiconductor/IOS-CoreBluetooth-Mock) that allows you to write your core bluetooth code using swift concurrency. It also plays nice with SwiftUI.
 
 The main classes are: