update docs copyright years

Gauvain Pocentek · Gauvain Pocentek · commit 455a8fc8cab1 · 2018-03-17T08:03:35.000+01:00
diff --git a/docs/conf.py b/docs/conf.py
@@ -57,7 +57,7 @@
 
 # General information about the project.
 project = 'python-gitlab'
-copyright = '2013-2016, Gauvain Pocentek, Mika Mäenpää'
+copyright = '2013-2018, Gauvain Pocentek, Mika Mäenpää'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
