Update .agents/skills/appkit/references/react-ethers.md

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Signed-off-by: Dargon789 <64915515+Dargon789@users.noreply.github.com>

Author: Dargon789

.agents/skills/appkit/references/react-ethers.md

@@ -48,6 +48,10 @@ Note: Ethers adapter does **not** require `WagmiProvider` or `QueryClientProvide
 ## Using the Provider
 
 ```tsx
+const erc20Abi = [
+  'function balanceOf(address owner) view returns (uint256)',
+  'function transfer(address to, uint256 value) returns (bool)'
+]
 import { useAppKitProvider, useAppKitAccount } from '@reown/appkit/react'
 import { BrowserProvider, Contract, formatEther, parseEther } from 'ethers'
 import type { Provider } from '@reown/appkit/react'