Update copy sizing utilities (#30182)

The `$sizes` Sass map doesn't exist anymore in `v5`.

diff --git a/site/content/docs/4.3/utilities/sizing.md b/site/content/docs/4.3/utilities/sizing.md
index 838e9b7f766936f73e7c1f5309a25469237a56d0..6f3bb084339692f2ca2c2e390a4b08b45443ee33 100644 (file)
--- a/site/content/docs/4.3/utilities/sizing.md
+++ b/site/content/docs/4.3/utilities/sizing.md
@@ -8,7 +8,7 @@ toc: true
 
 ## Relative to the parent
 
-Width and height utilities are generated from the `$sizes` Sass map in `_variables.scss`. Includes support for `25%`, `50%`, `75%`, `100%`, and `auto` by default. Modify those values as you need to generate different utilities here.
+Width and height utilities are generated from the utility API in `_utilities.scss`. Includes support for `25%`, `50%`, `75%`, `100%`, and `auto` by default. Modify those values as you need to generate different utilities here.
 
 {{< example >}}
 <div class="w-25 p-3" style="background-color: #eee;">Width 25%</div>