docs: Fix incorrect parentheses (#9629)

Merge pull request 9629

docs/_docs/step-by-step/07-assets.md

@@ -50,7 +50,7 @@ First create a Sass file at `assets/css/styles.scss` with the following content:
 
 The empty front matter at the top tells Jekyll it needs to process the file. The
 `@import "main"` tells Sass to look for a file called `main.scss` in the sass
-directory (`_sass/`) by default which you already created directly under the root folder of your website).
+directory (`_sass/` by default) you already created at the root of your working directory earlier.
 
 At this stage you'll just have a main css file. For larger projects, this is a
 great way to keep your CSS organized.