Fix FHS URL

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11442 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

prologue/standards.xml

@@ -23,7 +23,7 @@
       </listitem>
       <listitem>
         <para><ulink 
-        url="http://refspecs.linuxfoundation.org/fhs.shtml">
+        url="http://refspecs.linuxfoundation.org/FHS_3.0/fhs/index.html">
         Filesystem Hierarchy Standard (FHS) Version 3.0</ulink></para>
 
       </listitem>