core/types: fix typos (#17762)

core/types/transaction_signing.go

@@ -227,13 +227,13 @@ func recoverPlain(sighash common.Hash, R, S, Vb *big.Int, homestead bool) (commo
 	if !crypto.ValidateSignatureValues(V, R, S, homestead) {
 		return common.Address{}, ErrInvalidSig
 	}
-	// encode the snature in uncompressed format
+	// encode the signature in uncompressed format
 	r, s := R.Bytes(), S.Bytes()
 	sig := make([]byte, 65)
 	copy(sig[32-len(r):32], r)
 	copy(sig[64-len(s):64], s)
 	sig[64] = V
-	// recover the public key from the snature
+	// recover the public key from the signature
 	pub, err := crypto.Ecrecover(sighash[:], sig)
 	if err != nil {
 		return common.Address{}, err