Update apps/docs/content/components/Pillar/index.mdx

Co-authored-by: Rez <[email protected]>

Author: danielguillan

apps/docs/content/components/Pillar/index.mdx

@@ -30,7 +30,7 @@ Stack multiple pillars to create a collection of items. Ensure that all the item
   <Do>
     <img src="https://github.com/primer/brand/assets/912236/cd9679ab-cfa0-4c6d-8a55-21d16668f1ca" />
     <Caption>
-      Use similar content lengths to achieve a visually balanced layout.
+      Use similar character counts to achieve a visually balanced layout.
     </Caption>
   </Do>
   <Dont>