docs: add missing close para tag

From 30cc1512e

diff --git a/gtk/gtkfilechooserdialog.c b/gtk/gtkfilechooserdialog.c
index d2622bc4a42e4b9cb0b820e06a1cd51c061c0c49..b74d50f1c9760ff1c1cf65a72e0b3a2024623767 100644 (file)
--- a/gtk/gtkfilechooserdialog.c
+++ b/gtk/gtkfilechooserdialog.c
@@ -136,7 +136,8 @@
  * when it is appropriate to use gtk_file_chooser_set_filename(),
  * i.e. when you are doing a Save As command and you already
  * have a file saved somewhere.
- *
+ * </para>
+
  * ## Response Codes
  *
  * <para id="gtkfilechooserdialog-response-codes">