[gtk] snapshot: Fix typo in documentation comment

[Mohammed Sadiq <pksadiq src gnome org>]

commit 14e5218753dbf0c440ea00a7269e25869df4ae7d
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Sat May 12 09:31:32 2018 +0530

    snapshot: Fix typo in documentation comment

 gtk/gtksnapshot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtksnapshot.c b/gtk/gtksnapshot.c
index 6418aefd0f..907b089f7a 100644
--- a/gtk/gtksnapshot.c
+++ b/gtk/gtksnapshot.c
@@ -1018,7 +1018,7 @@ gtk_snapshot_pop (GtkSnapshot *snapshot)
 
 /**
  * gtk_snapshot_offset:
- * @snapshot: a $GtkSnapshot
+ * @snapshot: a #GtkSnapshot
  * @x: horizontal translation
  * @y: vertical translation
  *