fix: update covidtracking spider for new state daily url

Author: leafcoder

django_covid19/spider/nCoV/spiders/covidtracking.py

@@ -126,8 +126,8 @@ def parse_current_states(self, response):
         result = json.loads(response.text)
         for item in result:
             state = item['state']
-            daily_state_url = self.daily_state_url_template % state
-            current_state_url = self.current_state_url_template % state
+            daily_state_url = self.daily_state_url_template % state.lower()
+            current_state_url = self.current_state_url_template % state.lower()
             state_item = states[state]
             state_item.update(item)
             state_item.pop('grade', None)
@@ -194,4 +194,4 @@ def get_current_confirmed(self, data):
     def get_current_confirmed_incr(self, data):
         positive = data['positiveIncrease'] if data.get('positiveIncrease') else 0
         death = data['deathIncrease'] if data.get('deathIncrease') else 0
-        return positive - death
+        return positive - death