fix typo in test_sha3.py

Author: tomato42

src/ecdsa/test_sha3.py

@@ -43,7 +43,7 @@ def test_int_to_bytes_wrong_endian(self):
             int_to_bytes(0, byteorder="middle")
 
 
-@pytest.mark.skipif(GMPY == False, reason="requites gmpy or gmpy2")
+@pytest.mark.skipif(GMPY == False, reason="requires gmpy or gmpy2")
 def test_int_to_bytes_with_gmpy():
     assert int_to_bytes(mpz(1)) == b"\x01"