[gcalctool] Fix bug number

[Robert Ancell <rancell src gnome org>]

commit d8d90837e5b9ae9e1c4f0153159e0cc9c61fc0ea
Author: Robert Ancell <robert ancell gmail com>
Date:   Mon Apr 20 16:01:14 2009 +1000

    Fix bug number
---
 ChangeLog |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d067e24..5b6819e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -14,7 +14,7 @@ gcalctool change history.
 
 2009-03-30 Robert Ancell <robert ancell gmail com>
 
-    * Fix display on startup to be replaced on entry (Robert Ancell, Bug #575385)
+    * Fix display on startup to be replaced on entry (Robert Ancell, Bug #576975)
 
 2009-03-17 Robert Ancell <robert ancell gmail com>