[libmanette] doc: Use the package_name variable where relevant

[Adrien Plazas <aplazas src gnome org>]

commit 426410e46761114aedc2d7c3622ca9a9a19a8f2b
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Nov 15 21:56:14 2020 +0100

    doc: Use the package_name variable where relevant

 doc/manette-doc.xml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/doc/manette-doc.xml b/doc/manette-doc.xml
index b5949df..17bfd6c 100644
--- a/doc/manette-doc.xml
+++ b/doc/manette-doc.xml
@@ -8,10 +8,10 @@
 ]>
 <book id="index">
   <bookinfo>
-    <title>libmanette Reference Manual</title>
+    <title>&package_name; Reference Manual</title>
     <releaseinfo>
       <para>
-        This document is the API reference for libmanette &package_version;.
+        This document is the API reference for &package_name; &package_version;.
         The latest version can be found online at
         <ulink role="online-location" 
url="https://gnome.pages.gitlab.gnome.org/libmanette/";>https://gnome.pages.gitlab.gnome.org/libmanette/</ulink>.
       </para>
@@ -28,7 +28,7 @@
   </bookinfo>
 
   <chapter id="overview">
-    <title>libmanette Overview</title>
+    <title>&package_name; Overview</title>
 
     <para>
       &package_name;, the simple GObject game controller library.