chore(swift): update minimum xcode version for all platforms and minimum watchOS version (#6833)

* chore(swift): update minimum xcode version for all platforms and minimum watchOS version

* Address review comments

Author: thisisabhash

src/fragments/lib/ios-prereq-category.mdx

@@ -2,7 +2,7 @@ An application with Amplify libraries integrated and a minimum target of any of
 - **iOS 13.0**, using **Xcode 14.1** or later.
 - **macOS 10.15**, using **Xcode 14.1** or later.
 - **tvOS 13.0**, using **Xcode 14.3** or later.
-- **watchOS 7.0**, using **Xcode 14.3** or later.
+- **watchOS 9.0**, using **Xcode 14.3** or later.
 - **visionOS 1.0**, using **Xcode 15 beta 2** or later. (Preview support - see below for more details.)
 
 For a full example, please follow the [project setup walkthrough](/[platform]/start/project-setup/prerequisites/).

src/fragments/lib/ios-prereq-xcode.mdx

@@ -1 +1 @@
-* [Xcode](https://developer.apple.com/download/applications/) version 14.1 or later
+* [Xcode](https://developer.apple.com/download/applications/) version 14.1 or later

src/fragments/lib/project-setup/ios/prereq/prereq.mdx

@@ -1,3 +1,5 @@
+To set up an iOS application configured with Amplify:
+
 import ios0 from '/src/fragments/lib/ios-prereq-xcode.mdx';
 
 <Fragments fragments={{ swift: ios0 }} />