docs: move swcMinify: true out of "Experimental features" section (#…

…40394)

See the blog post:
https://nextjs.org/blog/next-12-3##swc-minifier-stable

## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the
feature request has been accepted for implementation before opening a
PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`

## Documentation / Examples

- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)

Co-authored-by: JJ Kasper <jj@jjsweb.site>

docs/advanced-features/compiler.md

@@ -9,6 +9,7 @@ description: Learn about the Next.js Compiler, written in Rust, which transforms
 
 | Version   | Changes                                                                                                                            |
 | --------- | ---------------------------------------------------------------------------------------------------------------------------------- |
+| `v12.3.0` | SWC Minifier [stable](https://nextjs.org/blog/next-12-3#swc-minifier-stable).                                                      |
 | `v12.2.0` | [SWC Plugins](#swc-plugins-Experimental) experimental support added.                                                               |
 | `v12.1.0` | Added support for Styled Components, Jest, Relay, Remove React Properties, Legacy Decorators, Remove Console, and jsxImportSource. |
 | `v12.0.0` | Next.js Compiler [introduced](https://nextjs.org/blog/next-12).                                                                    |
@@ -238,8 +239,6 @@ module.exports = {
 
 Only `importMap` in `@emotion/babel-plugin` is not supported for now.
 
-## Experimental Features
-
 ### Minification
 
 You can opt-in to using the Next.js compiler for minification. This is 7x faster than Terser.
@@ -254,6 +253,8 @@ module.exports = {
 
 If you have feedback about `swcMinify`, please share it on the [feedback discussion](https://github.com/vercel/next.js/discussions/30237).
 
+## Experimental Features
+
 ### Minifier debug options
 
 While the minifier is experimental, we are making the following options available for debugging purposes. They will not be available once the minifier is made stable.