Use GitHub-flavored markdown admonition

diff --git a/README.md b/README.md
index 198527f6e4c253026ca3f3ab096ac87a24a07414..98fdfd6237987ffa56da7280bb471a9ca5688cf0 100644 (file)
--- a/README.md
+++ b/README.md
@@ -12,7 +12,8 @@ This repository contains the minimal amount of code to create a new smart contra
 
 See example JavaScript below. Copy this code into the DevTools console in any web browser where you have a wallet (e.g., MetaMask) installed.
 
-**WARNING: all ETH sent in this transaction will be irreversibly destroyed.**
+> [!WARNING]<br>
+> All ETH sent in this transaction will be irreversibly destroyed.
 
 ```javascript
 const addr = (await ethereum.request({ method: 'eth_requestAccounts' }))[0]; // Your current wallet address