Fix the typo in api_conditional_updates.rst
Fix a typo in api_conditional_updates.rst. It should be 'instead of what
is in' not 'instead of what is is'.
@@ -147,7 +147,7 @@ Basic Usage
- **Exclusion**
In some cases we'll need to set conditions on what is *not* in the DB record
- instead of what is is, for that we will use the exclusion mechanism provided
+ instead of what is in, for that we will use the exclusion mechanism provided
by the ``Not`` class in all persistent objects. This class accepts single
values as well as iterables.
