chore: Add missing platforms to ReadME (#7442)

Author: itaybre

README.md

@@ -11,7 +11,7 @@ _Bad software is everywhere, and we're tired of it. Sentry is on a mission to he
 >
 > For the stable **v8** release, please switch to the [`v8.x` branch](https://github.com/getsentry/sentry-cocoa/tree/v8.x) and refer to the [v8 CHANGELOG](https://github.com/getsentry/sentry-cocoa/blob/v8.x/CHANGELOG.md).
 
-# Official Sentry SDK for iOS / tvOS / macOS / watchOS <sup>(1)</sup>
+# Official Sentry SDK for iOS / iPadOS / tvOS / macOS / watchOS <sup>(1)</sup> / visionOS
 
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