Fix typo in NEWS.rst

Author: IlyaSkriblovsky

docs/source/NEWS.rst

@@ -10,7 +10,7 @@ API Changes
 - This is the last release that supports Python <3.8 and MongoDB <4.0
 - Collection methods `insert()`, `update()` and `remove()` are deprecated in favor of
   corresponding `*_one()` and `*_many()` methods. Old methods will be removed in the next release.
-- Collection methods `save()`, `find_and_modify() and `group()` are deprecated and will be removed
+- Collection methods `save()`, `find_and_modify()` and `group()` are deprecated and will be removed
   in the next release.
 - `as_class` argument of `find()`, `find_with_cursor()` and `find_one()` is deprecated and will
   be removed in the next release.