Take out reference to Flex Order (#23759)

Since flex-order was renamed to just order, change the subtitle.

diff --git a/docs/4.0/layout/grid.md b/docs/4.0/layout/grid.md
index 62d126b901c6292847f39b6b2895f66afd6682cc..96f2beaf6ad7111e324b4235cd631b07e19f70ad 100644 (file)
--- a/docs/4.0/layout/grid.md
+++ b/docs/4.0/layout/grid.md
@@ -511,7 +511,7 @@ In addition to column clearing at responsive breakpoints, you may need to reset
 
 ## Reordering
 
-### Flex order
+### Order classes
 
 Use `.order-` classes for controlling the **visual order** of your content. These classes are responsive, so you can set the `order` by breakpoint (e.g., `.order-1.order-md-2`). Includes support for `1` through `12` across all five grid tiers.