docs: update copyright year

mroethke · mroethke · commit a304a38d5e34 · 2020-11-11T15:19:02.000+01:00
diff --git a/docs/conf.py b/docs/conf.py
@@ -56,7 +56,7 @@
 
 # General information about the project.
 project = 'rtrlib-python'
-copyright = '2016, Marcel Röthke'
+copyright = '2016-2020, Marcel Röthke'
 author = 'Marcel Röthke'
 
 # The version info for the project you're documenting, acts as replacement for
