Fixed SBU definition.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@6388 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

appendixa/acronymlist.xml

@@ -326,7 +326,7 @@ Metal Oxide Semiconductor</para></listitem>
 
 <varlistentry>
 <term><emphasis role="bold">SBU</emphasis></term>
-<listitem><para>Static Binutils Unit</para></listitem>
+<listitem><para>Static Build Unit</para></listitem>
 </varlistentry>
 
 <varlistentry>