fix(docs): sync Quiver block color card to white chip

Reflects the Quiver bgColor change (#000000 -> #FFFFFF) in the docs block info card.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: waleedlatif1

apps/docs/content/docs/en/tools/quiver.mdx

@@ -7,7 +7,7 @@ import { BlockInfoCard } from "@/components/ui/block-info-card"
 
 <BlockInfoCard 
   type="quiver"
-  color="#000000"
+  color="#FFFFFF"
 />
 
 {/* MANUAL-CONTENT-START:intro */}