18.03 release notes: reformat

nixos/doc/manual/release-notes/rl-1803.xml

@@ -6,6 +6,14 @@
 
 <title>Release 18.03 (“Impala”, 2018/03/??)</title>
 
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         version="5.0"
+         xml:id="sec-release-18.03-highlights">
+
+<title>Highlights</title>
+
 <para>In addition to numerous new and upgraded packages, this release
 has the following highlights: </para>
 
@@ -16,6 +24,15 @@ has the following highlights: </para>
   </listitem>
 </itemizedlist>
 
+</section>
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         version="5.0"
+         xml:id="sec-release-18.03-new-services">
+
+<title>New Services</title>
+
 <para>The following new services were added since the last release:</para>
 
 <itemizedlist>
@@ -24,6 +41,15 @@ has the following highlights: </para>
   </listitem>
 </itemizedlist>
 
+</section>
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         version="5.0"
+         xml:id="sec-release-18.03-incompatibilities">
+
+<title>Backward Incompatibilities</title>
+
 <para>When upgrading from a previous release, please be aware of the
 following incompatible changes:</para>
 
@@ -33,7 +59,14 @@ following incompatible changes:</para>
   </listitem>
 </itemizedlist>
 
-<para>Other notable improvements:</para>
+</section>
+<section xmlns="http://docbook.org/ns/docbook"
+         xmlns:xlink="http://www.w3.org/1999/xlink"
+         xmlns:xi="http://www.w3.org/2001/XInclude"
+         version="5.0"
+         xml:id="sec-release-18.03-notable-changes">
+
+<title>Other Notable Changes</title>
 
 <itemizedlist>
   <listitem>
@@ -43,3 +76,4 @@ following incompatible changes:</para>
 </itemizedlist>
 
 </section>
+</section>