[gtk] grid: Fix annotation typo

[Matthias Clasen <matthiasc src gnome org>]

commit 1ee5c2cac42b35b7c70739ae0e4e67842da44683
Author: Timm Bäder <mail baedert org>
Date:   Tue Apr 16 07:16:51 2019 +0200

    grid: Fix annotation typo

 gtk/gtkgrid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkgrid.c b/gtk/gtkgrid.c
index fdc3bec99e..f68468d769 100644
--- a/gtk/gtkgrid.c
+++ b/gtk/gtkgrid.c
@@ -1083,7 +1083,7 @@ gtk_grid_get_baseline_row (GtkGrid *grid)
  * @left: (out) (optional): the column used to attach the left side of @child
  * @top: (out) (optional): the row used to attach the top side of @child
  * @width: (out) (optional): the number of columns @child spans
- * @height: (out) (optiona): the number of rows @child spans
+ * @height: (out) (optional): the number of rows @child spans
  *
  * Queries the attach points and spans of @child inside the given #GtkGrid.
  */