Update wallet adapter docs (MystenLabs#5535)

sdk/wallet-adapter/README.md

@@ -19,13 +19,13 @@ import { WalletProvider } from "@mysten/wallet-adapter-react";
 import { WalletStandardAdapterProvider } from "@mysten/wallet-adapter-all-wallets";
 
 export function App() {
-  const supportedWallets = [
+  const adapters = useMemo(() => [
     // Add support for all wallets that adhere to the Wallet Standard:
     new WalletStandardAdapterProvider(),
-  ];
+  ], []);
 
   return (
-    <WalletProvider supportedWallets={supportedWallets}>
+    <WalletProvider adapters={adapters}>
       {/* Your application... */}
     </WalletProvider>
   );
@@ -94,7 +94,7 @@ The following wallets are known to work with the Wallet Standard:
 - **[Sui Wallet](https://docs.sui.io/devnet/explore/wallet-browser)**
 - **[Ethos Wallet](https://chrome.google.com/webstore/detail/ethos-wallet/mcbigmjiafegjnnogedioegffbooigli)**
 - **[Suiet Wallet](https://suiet.app/)**
- 
+
 ## Demo app
 
 This repo has a simple demo app to test the behavior of the wallet adapters. You can run it using the following commands: