[PATCH] config: clarify and exemplify the user name in the sample config file

[Jordi Gutiérrez Hermoso]

# HG changeset patch
# User Jordi Gutiérrez Hermoso <jordigh at octave.org>
# Date 1394220566 18000
#      Fri Mar 07 14:29:26 2014 -0500
# Node ID 424610b4174a14a348d394c98d39836119e9590d
# Parent  3bfac190c7cd602d3ae6809613073093b8807f2a
config: clarify and exemplify the user name in the sample config file

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1494,7 +1494,8 @@
                 '# example config (see "hg help config" for more info)\n'
                 '\n'
                 '[ui]\n'
-                '# set this to your full email address\n'
+                '# name and email, e.g.\n'
+                '# username = Jane Doe <jdoe at example.com>\n'
                 'username =\n'
                 '\n'
                 '[extensions]\n'