all: fix typos in comments (#21118)

accounts/scwallet/wallet.go

@@ -362,7 +362,7 @@ func (w *Wallet) Open(passphrase string) error {
 				return err
 			}
 			// Pairing succeeded, fall through to PIN checks. This will of course fail,
-			// but we can't return ErrPINNeeded directly here becase we don't know whether
+			// but we can't return ErrPINNeeded directly here because we don't know whether
 			// a PIN check or a PIN reset is needed.
 			passphrase = ""
 		}