docs: specify supported nuxt version (#7770)

Save others some time trying to get the wrong package to work with Nuxt 3

Author: jawys

src/platforms/index.mdx

@@ -45,7 +45,7 @@ These SDKs are maintained and supported by [the Sentry community](https://open.s
 - [_Kubernetes_](https://github.com/alekitto/sentry-kubernetes)
 - [_Lua_](https://github.com/cloudflare/raven-lua)
 - [_NestJS_](https://github.com/ntegral/nestjs-sentry) or [_NestJS_](https://github.com/mentos1386/nest-raven)
-- [_Nuxt_](https://github.com/nuxt-community/sentry-module)
+- [_Nuxt 2_](https://github.com/nuxt-community/sentry-module)
 - [_OCaml_](https://github.com/brendanlong/sentry-ocaml)
 - [_Perl_](https://github.com/getsentry/perl-raven)
 - [_Scrapy_](https://github.com/llonchj/scrapy-sentry)