[FIX] Minor docstring fix

A "s" was missing...

hshetl/jobs.py

@@ -197,7 +197,7 @@ class ConnectorJob(Job):
 
         :param connector: The connector used by the job. Can be None - depends on the inheriting class if required or not.
         :param **kwargs: Accepts parameters from :class:`.Job`.
-        :type connector: :class:`hshetl.connector.AbstractConnector`
+        :type connector: :class:`hshetl.connectors.AbstractConnector`
 
     '''