Reference /etc/lsb-release in index.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10748 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter09/theend.xml

@@ -14,6 +14,10 @@
     <primary sortas="e-/etc/lfs-release">/etc/lfs-release</primary>
   </indexterm>
 
+  <indexterm zone="ch-finish-theend">
+    <primary sortas="e-/etc/lsb-release">/etc/lsb-release</primary>
+  </indexterm>
+
   <para>Well done! The new LFS system is installed! We wish you much
   success with your shiny new custom-built Linux system.</para>