[gtk/matthiasc/for-master] docs: Tweak gallery layout

[Matthias Clasen <matthiasc src gnome org>]

commit a9f0f18c3afd1feacf6bb9b041d697b961a83623
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Oct 25 22:16:26 2020 -0400

    docs: Tweak gallery layout
    
    Improve the breaks in the container section.

 docs/reference/gtk/visual_index.xml | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/docs/reference/gtk/visual_index.xml b/docs/reference/gtk/visual_index.xml
index 07a10bb2f7..2ad288451b 100644
--- a/docs/reference/gtk/visual_index.xml
+++ b/docs/reference/gtk/visual_index.xml
@@ -69,9 +69,13 @@
     <link linkend="GtkFrame"><inlinegraphic fileref="frame.png" format="PNG"></inlinegraphic></link>
     <link linkend="GtkListBox"><inlinegraphic fileref="list-box.png" format="PNG"></inlinegraphic></link>
     <link linkend="GtkFlowBox"><inlinegraphic fileref="flow-box.png" format="PNG"></inlinegraphic></link>
+  </para>
+  <para role="gallery">
     <link linkend="GtkStack"><inlinegraphic fileref="stack.png" format="PNG"></inlinegraphic></link>
     <link linkend="GtkStackSwitcher"><inlinegraphic fileref="stackswitcher.png" 
format="PNG"></inlinegraphic></link>
     <link linkend="GtkStackSidebar"><inlinegraphic fileref="sidebar.png" format="PNG"></inlinegraphic></link>
+  </para>
+  <para role="gallery">
     <link linkend="GtkTreeView"><inlinegraphic fileref="list-and-tree.png" 
format="PNG"></inlinegraphic></link>
     <link linkend="GtkIconView"><inlinegraphic fileref="icon-view.png" format="PNG"></inlinegraphic></link>
   </para>