fix typo
This should probably either be `this is what the UNLESS CONFLICT clause allows` or `this is what the UNLESS CONFLICT clause allows you to do`.
@@ -175,7 +175,7 @@ clause.
There's an important use-case where it is necessary to either insert a
new object or update an existing one identified with some key. This is
-what ``UNLESS CONFLICT`` clause allows to do:
+what the ``UNLESS CONFLICT`` clause allows:
.. code-block:: edgeql
