update unittest for merged config

Author: mariajahja

doctor_visits/tests/test_classconfig.py

@@ -9,4 +9,5 @@ def test_values(self):
         conf = Config()
 
         assert conf.CLI_COLS == ["Covid_like", "Flu_like", "Mixed"]
-        assert conf.MIN_OBS == 2500
+        assert conf.MIN_RECENT_VISITS == 100
+        assert conf.MIN_RECENT_OBS == 3