docs: Reformatted imports as suggested in PR #380

docs/manuals/scripts/generate-resoure-descriptions.py

@@ -1,9 +1,7 @@
 #!/usr/bin/env python
 
-from __future__ import division
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
+from __future__ import (absolute_import, division,
+                        print_function, unicode_literals)
 
 import argparse
 import logging