the link to Python is missing /

link was going to pythoncurrent so the slash wasn't showing up (wrong slash?)

Signed-off-by: kay <kay.kim@10gen.com>

Author: asya999

source/reference/operator/query/not.txt

@@ -69,5 +69,5 @@ $not
    .. seealso::
 
       :method:`~db.collection.find()`, :method:`~db.collection.update()`, :update:`$set`, :query:`$gt`,
-      :query:`$regex`, :api:`PyMongo <python\current>`,
+      :query:`$regex`, :api:`PyMongo <python/current>`,
       :term:`driver`.