Fix an old reference changing rcsysinit.d to rcS.d

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10288 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter07/usage.xml

@@ -87,7 +87,7 @@ EOF</userinput></screen>
   <emphasis>inittab</emphasis>.  For LFS, the key command that is run is
   <command>rc</command>. The intialization file above will instruct
   <command>rc</command> to run all the scripts starting with an S in the
-  <filename class="directory">/etc/rc.d/rcsysinit.d</filename> directory
+  <filename class="directory">/etc/rc.d/rcS.d</filename> directory
   followed by all the scripts starting with an S in the <filename
   class="directory">/etc/rc.d/rc?.d</filename> directory where the question
   mark is specified by the initdefault value.</para>