review chgs relevant to server_version...

Author: d-w-moore

irods/session.py

@@ -392,9 +392,12 @@ def server_version_without_auth(self):
     )
 
     def _server_version(self, version_func=None):
-        """The  server version can be retrieved by the usage
+        """The server version can be retrieved by the usage:
+
             session._server_version()
+
         with conditional substitution by another version by use of the environment variable:
+
             PYTHON_IRODSCLIENT_REPORTED_SERVER_VERSION.
 
         Also: if iRODSServer.GET_SERVER_VERSION_WITHOUT_AUTH is passed in version_func, the true server