[geary] README: fix link formatting for IRC room

[Niels De Graef <nielsdg src gnome org>]

commit ac4626299f74d084bb64b2f8ca834482be30ccaa
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Mon Sep 25 18:56:41 2017 +0200

    README: fix link formatting for IRC room

 README.md |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/README.md b/README.md
index 1fa2670..ba5f9e8 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Getting in Touch
 
  * Geary wiki:   https://wiki.gnome.org/Apps/Geary
  * Mailing list: http://mail.gnome.org/mailman/listinfo/geary-list
- * IRC Channel:  [irc://irc.gimp.org/%23geary](#geary on irc.gimp.org)
+ * IRC Channel:  [#geary on irc.gimp.org](irc://irc.gimp.org/%23geary)
 
 ---
 Copyright 2016 Software Freedom Conservancy Inc.