vue: Document supported version range (#3716)

Author: rhcarvalho

src/includes/getting-started-primer/javascript.vue.mdx

@@ -1,6 +1,6 @@
 <Note>
 
-Sentry's Vue SDK enables automatic reporting of errors and exceptions.
+Sentry's Vue SDK enables automatic reporting of errors and exceptions. It targets Vue version `2.x`. Support for `3.x` is tracked by [GitHub issue #2925](https://github.com/getsentry/sentry-javascript/issues/2925).
 
 The SDK will capture the name and props state of the active component where the error was thrown. This is reported via Vue’s `config.errorHandler` hook.