[PATCH] xl: fix pci-detach usage

[Jeremy Fitzhardinge <jeremy@goop.org>]

"xl pci-detach -h" shows the usage for pci-attach

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

diff -r 8cfdda34f851 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c	Tue May 25 13:40:56 2010 -0700
+++ b/tools/libxl/xl_cmdimpl.c	Thu May 27 11:10:35 2010 -0700
@@ -1532,7 +1532,7 @@
     while ((opt = getopt(argc, argv, "h")) != -1) {
         switch (opt) {
         case 'h':
-            help("pci-attach");
+            help("pci-detach");
             exit(0);
         default:
             fprintf(stderr, "option not supported\n");