Remove hardcoded 2013 date

The front page and docs landing page emphasize documentation, but the user guide looks like it hasn't been updated since 2013. It seems from the history of the file that this number is misleading. Let me know if I'm missing anything.

diff --git a/docs/userguide b/docs/userguide
index 974135acb794bb37a58769f0ba0ab90c66f4553b..4a400dfc80015ab6585c804f2bfe8c875d4d0eb9 100644 (file)
--- a/docs/userguide
+++ b/docs/userguide
@@ -1,7 +1,6 @@
 i3 User’s Guide
 ===============
 Michael Stapelberg <michael@i3wm.org>
-March 2013
 
 This document contains all the information you need to configure and use the i3
 window manager. If it does not, please check https://www.reddit.com/r/i3wm/