git-gui: Make the gitk starting message match our usual format.

Because we usually say "Operation... please wait..." we should do
the same thing when starting gitk.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
diff --git a/git-gui.sh b/git-gui.sh
index 84205b0..0851eae 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -2215,7 +2215,7 @@
 ##
 ## ui commands
 
-set starting_gitk_msg {Please wait... Starting gitk...}
+set starting_gitk_msg {Starting gitk... please wait...}
 
 proc do_gitk {revs} {
 	global ui_status_value starting_gitk_msg