Update l2-transfer-tools-faq.mdx

Co-authored-by: Benoît Rouleau <[email protected]>

Author: 0xa3k5

website/src/pages/en/archived/arbitrum/l2-transfer-tools-faq.mdx

@@ -2,7 +2,7 @@
 title: L2 Transfer Tools FAQ
 ---
 
-> **Important**: L2 Transfer Tools have been deprecated, and The Graph now runs on Arbitrum, a Layer 2 blockchain.
+> [!IMPORTANT] L2 Transfer Tools have been deprecated, and The Graph now runs on Arbitrum, a Layer 2 blockchain.
 
 ## General