AtkTable: Added missing ":" on one gi annotation

diff --git a/atk/atktable.c b/atk/atktable.c
index ba5d7c1..082de56 100755 (executable)
--- a/atk/atktable.c
+++ b/atk/atktable.c
@@ -511,7 +511,7 @@ atk_table_get_n_rows (AtkTable *table)
  *
  * Gets the description text of the specified row in the table
  *
- * Returns: (nullable) a gchar* representing the row description, or
+ * Returns: (nullable): a gchar* representing the row description, or
  * %NULL if value does not implement this interface.
  **/
 const gchar*