doc(sveltekit): Promote the SDK to beta state

Author: Lms24

packages/sveltekit/README.md

@@ -19,9 +19,9 @@ TODO: No docs yet, comment back in once we have docs
 
 ## SDK Status
 
-This SDK is currently in **Alpha state** and we're still experimenting with APIs and functionality.
-We therefore make no guarantees in terms of semver or breaking changes.
-If you want to try this SDK and come across a problem, please open a [GitHub Issue](https://github.com/getsentry/sentry-javascript/issues/new/choose).
+This SDK is currently in **Beta state**. Bugs and issues might still appear and we're still actively working
+on the SDK. Also, we're still adding features.
+If you experience problems or have feedback, please open a [GitHub Issue](https://github.com/getsentry/sentry-javascript/issues/new/choose).
 
 ## Compatibility