Update querying.rst

Co-authored-by: Bastien Gérard <[email protected]>

Author: idoshr

docs/guide/querying.rst

@@ -260,7 +260,7 @@ This is done by using ``__raw__`` keyword argument to the update method and prov
 `Update with Array Operator <https://www.mongodb.com/docs/manual/reference/operator/update/positional-filtered->`_
 ::
 
-    # 'tags' field == ['test1', 'test2', 'test3']
+    # assuming an initial 'tags' field == ['test1', 'test2', 'test3']
     Page.objects().update(__raw__=
                                   {'$set': {"tags.$[element]": 'test11111'}},
                                   'array_filters': [{"element": {'$eq': 'test2'}}],