minor #10248 [RST] Use SCSS instead of CSS for code block (royklutman)

This PR was merged into the 3.4 branch.

Discussion
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[RST] Use SCSS instead of CSS for code block

Small change to use SCSS instead of CSS for the SCSS code block.

Commits
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ce63c8c Use SCSS instead of CSS for code block

Author: javiereguiluz

frontend/encore/bootstrap.rst

@@ -16,7 +16,7 @@ Now that ``bootstrap`` lives in your ``node_modules/`` directory, you can
 import it from any Sass or JavaScript file. For example, if you already have
 a ``global.scss`` file, import it from there:
 
-.. code-block:: css
+.. code-block:: scss
 
     // assets/css/global.scss