[glib] Trivial: fix a typo

[Matthias Clasen <matthiasc src gnome org>]

commit 07b3595c230c42ef8a31406d00477c9f755e902d
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jun 5 11:21:57 2015 -0400

    Trivial: fix a typo
    
    Pointed out in https://bugzilla.gnome.org/show_bug.cgi?id=750399

 glib/gerror.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glib/gerror.c b/glib/gerror.c
index 958f776..96a6036 100644
--- a/glib/gerror.c
+++ b/glib/gerror.c
@@ -511,7 +511,7 @@ g_error_copy (const GError *error)
  * If @domain contains a `FAILED` (or otherwise generic) error code,
  * you should generally not check for it explicitly, but should
  * instead treat any not-explicitly-recognized error code as being
- * equilalent to the `FAILED` code. This way, if the domain is
+ * equivalent to the `FAILED` code. This way, if the domain is
  * extended in the future to provide a more specific error code for
  * a certain case, your code will still work.
  *