[gnome-flashback] configure.ac: fix wrong comment

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 72eb49a13d9535d703c7da14217225612e9a7a59
Author: Dmitry Shachnev <mitya57 gmail com>
Date:   Sun Aug 14 17:22:32 2022 +0300

    configure.ac: fix wrong comment

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index eccd19f..eadb21d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -344,7 +344,7 @@ PKG_CHECK_EXISTS([gnome-bluetooth-1.0], [
   found_gnome_bluetooth="yes"
   PKG_CHECK_MODULES([GNOME_BLUETOOTH], [gnome-bluetooth-1.0])
   AC_DEFINE([HAVE_GNOME_BLUETOOTH], [1],
-            [Define if gnome-desktop is 43.alpha or newer])
+            [Define if libgnome-bluetooth is available])
 ], [
   found_gnome_bluetooth="no"
 ])