Correct the wrong sentences in the comments.

product/ERP5/Document/Inventory.py

@@ -97,7 +97,7 @@ class Inventory(Delivery):
     disable_archive = kw.pop("disable_archive", 0)
 
     draft_state_list = list(self.getPortalDraftOrderStateList())
-    # we need reindex when we do cancelling inventories
+    # we need reindex when cancelling inventories
     if 'cancelled' in draft_state_list:
       draft_state_list.remove('cancelled')
     if self.getSimulationState() in draft_state_list:

product/ERP5/tests/testInventory.py

@@ -3034,7 +3034,7 @@ class TestInventory(TestOrderMixin, ERP5TypeTestCase):
      stock:
      1| movement | 2013/03/20 00:00:00 | 100
      2| movement | 2013/03/20 00:00:00 | 100
-     3| movement | 2013/03/20 00:00:00 | -100
+     3| movement | 2013/03/20 00:00:01 | -100
 
      getInventory() should return 100