fixed small typo in mountproc.xml

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2736 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/mountproc.xml

@@ -50,7 +50,7 @@ used to compile the mount program with).</para>
 
 <para>Remember, if for any reason you stop working on your LFS, and
 start again later, it's important to check that these filesystems are still
-mounted inside the chroot enviornment. Otherwise, some programs might
+mounted inside the chroot environment. Otherwise, some programs might
 end up compiled incorrectly.</para>
 
 </sect1>