add docstring for establishment schedule

apps/establishment/views/back.py

@@ -218,7 +218,30 @@ class EstablishmentRUDView(EstablishmentMixinViews, generics.RetrieveUpdateDestr
 
 
 class EstablishmentScheduleRUDView(EstablishmentMixinViews, generics.RetrieveUpdateDestroyAPIView):
-    """Establishment schedule RUD view"""
+    """
+    Establishment schedule RUD view
+
+    **GET**
+    ```
+    Implement getting object of Establishment schedule.
+    ```
+
+    **PUT**
+    ```
+    Implement update Establishment schedule.
+    ```
+
+    **PATCH**
+    ```
+    Implement partial update Establishment schedule.
+    ```
+
+    **DELETE**
+    ```
+    Implement delete Establement schedule.
+    ```
+
+    """
     lookup_field = 'slug'
     serializer_class = ScheduleRUDSerializer
     permission_classes = get_permission_classes(
@@ -246,7 +269,11 @@ class EstablishmentScheduleRUDView(EstablishmentMixinViews, generics.RetrieveUpd
 
 
 class EstablishmentScheduleCreateView(generics.CreateAPIView):
-    """Establishment schedule Create view"""
+    """
+    Establishment schedule Create view
+
+    Implement creating Establishment shedule.
+    """
     lookup_field = 'slug'
     serializer_class = ScheduleCreateSerializer
     queryset = Timetable.objects.all()