[devhelp] docs: improve structure

[Sébastien Wilmet <swilmet src gnome org>]

commit 75a455e7e70d2bce4ac756195d0f2181bfd7f4be
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat May 6 12:50:04 2017 +0200

    docs: improve structure

 docs/reference/devhelp-docs.xml |   40 +++++++++++++++++++++++++++-----------
 1 files changed, 28 insertions(+), 12 deletions(-)
---
diff --git a/docs/reference/devhelp-docs.xml b/docs/reference/devhelp-docs.xml
index fb4ee09..88c5f7b 100644
--- a/docs/reference/devhelp-docs.xml
+++ b/docs/reference/devhelp-docs.xml
@@ -10,23 +10,39 @@
   <bookinfo>
     <title>&package_name; Reference Manual</title>
     <releaseinfo>
-      for &package_string;.
+      For &package_string;.
       The latest version of this documentation can be found on-line at
-      <ulink role="online-location" 
url="http://developer.gnome.org/devhelp/index.html";>http://developer.gnome.org/devhelp/</ulink>.
+      <ulink role="online-location" 
url="https://developer.gnome.org/devhelp/";>https://developer.gnome.org/devhelp/</ulink>.
     </releaseinfo>
   </bookinfo>
 
-  <chapter>
+  <part>
     <title>API Reference</title>
-    <xi:include href="xml/init.xml"/>
-    <xi:include href="xml/dh-assistant-view.xml"/>
-    <xi:include href="xml/dh-book.xml"/>
-    <xi:include href="xml/dh-book-manager.xml"/>
-    <xi:include href="xml/dh-book-tree.xml"/>
-    <xi:include href="xml/dh-keyword-model.xml"/>
-    <xi:include href="xml/dh-link.xml"/>
-    <xi:include href="xml/dh-sidebar.xml"/>
-  </chapter>
+
+    <chapter>
+      <title>General</title>
+      <xi:include href="xml/init.xml"/>
+    </chapter>
+
+    <chapter>
+      <title>The Data</title>
+      <xi:include href="xml/dh-book-manager.xml"/>
+      <xi:include href="xml/dh-book.xml"/>
+      <xi:include href="xml/dh-link.xml"/>
+    </chapter>
+
+    <chapter>
+      <title>Side Panel</title>
+      <xi:include href="xml/dh-sidebar.xml"/>
+      <xi:include href="xml/dh-book-tree.xml"/>
+      <xi:include href="xml/dh-keyword-model.xml"/>
+    </chapter>
+
+    <chapter>
+      <title>Assistant</title>
+      <xi:include href="xml/dh-assistant-view.xml"/>
+    </chapter>
+  </part>
 
   <chapter id="object-tree">
     <title>Object Hierarchy</title>