[glib] Fix a small typo

[Matthias Clasen <matthiasc src gnome org>]

commit 97a38dc5865e554bd3567dea37f4cd33a5f50537
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 22 15:09:31 2016 -0400

    Fix a small typo

 glib/gtestutils.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glib/gtestutils.c b/glib/gtestutils.c
index 67baada..bb1bdd4 100644
--- a/glib/gtestutils.c
+++ b/glib/gtestutils.c
@@ -1128,7 +1128,7 @@ parse_args (gint    *argc_p,
  *   `quick`: Quick tests, should run really quickly and give good coverage.
  *
  *   `undefined`: Tests for undefined behaviour, may provoke programming errors
- *   under g_test_trap_subprocess() or g_test_expect_messages() to check
+ *   under g_test_trap_subprocess() or g_test_expect_message() to check
  *   that appropriate assertions or warnings are given
  *
  *   `no-undefined`: Avoid tests for undefined behaviour