Update flag description

Bug: 383250683
Flag: EXEMPT aconfig metadata fix
Flag: EXEMPT non-code change
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:014d7ad1b8be4355804b8580c32e5b106ad0e9e1)
Merged-In: If20c8c4039145162a787bb6d65f64cd27c223b7b
Change-Id: If20c8c4039145162a787bb6d65f64cd27c223b7b

aconfig/systemui.aconfig

diff --git a/aconfig/systemui.aconfig b/aconfig/systemui.aconfig
index d0edc1f..9a9259c 100644
--- a/aconfig/systemui.aconfig
+++ b/aconfig/systemui.aconfig
@@ -66,7 +66,7 @@
 flag {
     name: "new_customization_picker_ui"
     namespace: "systemui"
-    description: "Enables the BC25 design of the customization picker UI."
+    description: "Enables the new design of the customization picker UI."
     bug: "339081035"
 }