minor #14649 Prefer sass over node-sass (weaverryan)

This PR was submitted for the 5.2 branch but it was merged into the 4.4 branch instead.

Discussion
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Prefer sass over node-sass

Hi!

`node-sass` is deprecated in favor of `sass` - https://sass-lang.com/blog/libsass-is-deprecated.  Encore works exactly the same with both, and `sass` doesn't require an annoying compile step that sometimes fails anyways.

And also, here is the PR that will change which library is recommended: symfony/webpack-encore#870

I will merge and tag that shortly.

Commits
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41418b7 Prefer sass over node-sass

Author: wouterj

frontend/encore/simple-example.rst

@@ -311,15 +311,15 @@ Encore. When you do, you'll see an error!
 
 .. code-block:: terminal
 
-    >   Error: Install sass-loader & node-sass to use enableSassLoader()
-    >     yarn add sass-loader@^8.0.0 node-sass --dev
+    >   Error: Install sass-loader & sass to use enableSassLoader()
+    >     yarn add sass-loader@^10.0.0 sass --dev
 
 Encore supports many features. But, instead of forcing all of them on you, when
 you need a feature, Encore will tell you what you need to install. Run:
 
 .. code-block:: terminal
 
-    $ yarn add sass-loader@^8.0.0 node-sass --dev
+    $ yarn add sass-loader@^10.0.0 sass --dev
     $ yarn encore dev --watch
 
 Your app now supports Sass. Encore also supports LESS and Stylus. See