minor typo correction in test name

ippisite/ippidb/tests.py

@@ -493,7 +493,7 @@ class TestConvertIUPACToSMILESAndMore(TestCase):
             self.assertEqual(dict_expected["stdinchi"], dict_returned["stdinchi"])
             self.assertEqual(dict_expected["stdinchikey"], dict_returned["stdinchikey"])
 
-    def test_invalide_entry(self):
+    def test_invalid_entry(self):
         self.assertRaises(ws.EntryNotFoundError, ws.convert_iupac_to_smiles_and_inchi, '3-{1-oxo-6-[4-(piperid')
         self.assertRaises(ws.EntryNotFoundError, ws.convert_iupac_to_smiles_and_inchi, None)