update copyright year

LICENSE

 The MIT License (MIT)
 
-Copyright (c) 2016-2018 Robert Habermann
+Copyright (c) 2016-2020 Robert Habermann
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

docs/conf.py

@@ -213,7 +213,7 @@ html_show_sourcelink = False
 # implements a search results scorer. If empty, the default will be used.
 #html_search_scorer = 'scorer.js'
 
-# Output file base name for HTML help builder.
+# Output file base name for HTML help buildbuilder.
 htmlhelp_basename = 'PyOTRSdoc'
 
 # -- Options for LaTeX output ---------------------------------------------