Fix typo in an OPENSTACK_PROFILER setting reference
@@ -633,7 +633,7 @@ in that dictionary are:
* ``"notifier_connection_string"`` is a url to which trace messages are sent by
Horizon. For other components it is usually the only URL specified in config,
because other components act mostly as traces producers. Example:
- ``"notifier_connection_string": "mongodb://%s' % OPENSTACK_HOST"``.
+ ``"notifier_connection_string": "mongodb://%s" % OPENSTACK_HOST``.
* ``"receiver_connection_string"`` is a url from which traces are retrieved by
Horizon, needed because Horizon is not only the traces producer, but also a
consumer. Having 2 settings which usually contain the same value is legacy
