fix copyright years in docs
diff --git a/doc/overview.edoc b/doc/overview.edoc
index ed86d63..b5c2250 100644
--- a/doc/overview.edoc
+++ b/doc/overview.edoc
@@ -1,7 +1,7 @@
@title Recon Application
@author Fred Hebert <mononcqc@ferd.ca>
[http://ferd.ca/]
-@copyright 2012-2018 Fred Hebert (BSD 3-Clause License)
+@copyright 2012-2019 Fred Hebert (BSD 3-Clause License)
@doc Recon is a library to be dropped into any other Erlang project,
to be used to assist DevOps people diagnose problems in production
