Update IRC handle in MAINTAINERS

Change-Id: Ie90e8c8b559079e797470e493e00cf814df48301
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 622a29e..c090834 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -42,4 +42,4 @@
 START OF MAINTAINERS LIST
 -------------------------
 
-M:  Andrew Geissler <geissonator@yahoo.com> <AndrewG!>
+M:  Andrew Geissler <geissonator@yahoo.com> <geissonator!>