[gtksourceview] docs: add missing "Since: 3.14"

[Sébastien Wilmet <swilmet src gnome org>]

commit 2ef4a488b749fcdd18d1f801deba0b8219ccad40
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Aug 10 21:25:51 2014 +0200

    docs: add missing "Since: 3.14"

 gtksourceview/gtksourceencoding.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourceencoding.c b/gtksourceview/gtksourceencoding.c
index c8a2ba9..d6b76e8 100644
--- a/gtksourceview/gtksourceencoding.c
+++ b/gtksourceview/gtksourceencoding.c
@@ -498,6 +498,7 @@ gtk_source_encoding_get_name (const GtkSourceEncoding* enc)
  *
  * Returns: (transfer container) (element-type GtkSource.Encoding): the list of
  * default candidate encodings. Free with g_slist_free().
+ * Since: 3.14
  */
 GSList *
 gtk_source_encoding_get_default_candidates (void)