[gtk+] Fix a typo

[Matthias Clasen <matthiasc src gnome org>]

commit 436a258bb01b393bd61e42ae3b568849b94478b7
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 20 23:50:40 2015 -0500

    Fix a typo

 gtk/gtkcssimagegradient.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcssimagegradient.c b/gtk/gtkcssimagegradient.c
index 2716797..6ba993b 100644
--- a/gtk/gtkcssimagegradient.c
+++ b/gtk/gtkcssimagegradient.c
@@ -399,7 +399,7 @@ _gtk_gradient_parse (GtkCssParser *parser)
           if (! _gtk_css_parser_try_double (parser, &coords[(i * 3) + 2]))
             {
               _gtk_css_parser_error (parser,
-                                     "Expected a numer for the radius");
+                                     "Expected a number for the radius");
               return NULL;
             }
         }