Replace deprecated assertEquals

Change-Id: Ibc35de39a81f6427d7a28181a2c8dd17ac918702
diff --git a/KorAPClient/tests/test_korapclient.py b/KorAPClient/tests/test_korapclient.py
index 6d19af6..485f513 100644
--- a/KorAPClient/tests/test_korapclient.py
+++ b/KorAPClient/tests/test_korapclient.py
@@ -17,7 +17,7 @@
 
     def test_collocation_score_query(self):
         df = self.kcon.collocationScoreQuery("Ameisenplage", "heimgesucht", leftContextSize=0, rightContextSize=1)
-        self.assertEquals(df['rightContextSize'][0], 1)
+        self.assertEqual(df['rightContextSize'][0], 1)
         self.assertGreater(df['logDice'][0], 1)
         self.assertGreater(df['pmi'][0], 10)
         self.assertLess(df['pmi'][0], 20)