renamed file systme to partition

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2175 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter03/mounting.xml

@@ -1,5 +1,5 @@
 <sect1 id="ch04-mounting">
-<title>Mounting the new file system</title>
+<title>Mounting the new partition</title>
 <?dbhtml filename="mounting.html" dir="chapter04"?>
 
 <para>Now that we've created a file system, we want to be able to access it.