accounts: fix typo in errors.go (#24270)

accounts/errors.go

@@ -42,7 +42,7 @@ var ErrInvalidPassphrase = errors.New("invalid password")
 var ErrWalletAlreadyOpen = errors.New("wallet already open")
 
 // ErrWalletClosed is returned if a wallet is attempted to be opened the
-// secodn time.
+// second time.
 var ErrWalletClosed = errors.New("wallet closed")
 
 // AuthNeededError is returned by backends for signing requests where the user