Resolve "Django 3.2 database improvements"

Closes #125 (closed)

aleksis/apps/chronos/managers.py

@@ -215,7 +215,7 @@ class WeekQuerySetMixin:
         )
 
     def alias_week(self, week: Union[CalendarWeek]):
-        """Add an alias to all lessons in the QuerySet with the number of the provided calendar week."""
+        """Add an alias to all lessons in the QuerySet with the number of the calendar week."""
         return self.alias(
             _week=models.Value(week.week, models.IntegerField()),
             _year=models.Value(week.year, models.IntegerField()),