fix passkey tutorial

Author: AyushBherwani1998

src/pages/tutorials/use-passkey-as-backup-signer.md

@@ -178,7 +178,7 @@ const webAuthnAccount = toWebAuthnAccount({ credential })
 const smartAccount = await toMetaMaskSmartAccount({
   client: publicClient,
   implementation: Implementation.Hybrid,
-  deployParams: [owner, [credential.id], [publicKey.x], [publicKey.y]],
+  deployParams: [owner, [toHex(credential.id)], [publicKey.x], [publicKey.y]],
   deploySalt: '0x',
   signer: { webAuthnAccount, keyId: toHex(credential.id) },
 })