[amtk] docs: update gtk-doc stuff

[Sébastien Wilmet <swilmet src gnome org>]

commit df0241d7c0a51183f7c6ed62f72eed320f2747f3
Author: Sébastien Wilmet <swilmet informatique-libre be>
Date:   Sat May 28 14:28:27 2022 +0200

    docs: update gtk-doc stuff

 docs/reference/amtk-docs.xml     | 4 ++++
 docs/reference/amtk-sections.txt | 1 +
 2 files changed, 5 insertions(+)
---
diff --git a/docs/reference/amtk-docs.xml b/docs/reference/amtk-docs.xml
index 3e2033b..041192d 100644
--- a/docs/reference/amtk-docs.xml
+++ b/docs/reference/amtk-docs.xml
@@ -61,5 +61,9 @@
       <title>Index of new symbols in 5.0</title>
       <xi:include href="xml/api-index-5.0.xml"><xi:fallback /></xi:include>
     </index>
+    <index id="api-index-5-6" role="5.6">
+      <title>Index of new symbols in 5.6</title>
+      <xi:include href="xml/api-index-5.6.xml"><xi:fallback /></xi:include>
+    </index>
   </part>
 </book>
diff --git a/docs/reference/amtk-sections.txt b/docs/reference/amtk-sections.txt
index e262968..b2b9538 100644
--- a/docs/reference/amtk-sections.txt
+++ b/docs/reference/amtk-sections.txt
@@ -181,4 +181,5 @@ amtk_utils_remove_mnemonic
 amtk_utils_recent_chooser_menu_get_item_uri
 amtk_utils_bind_g_action_to_gtk_action
 amtk_utils_create_gtk_action
+amtk_utils_get_shrinkable_menubar
 </SECTION>