Revert tar args.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2127 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter02/install.xml

@@ -38,7 +38,7 @@ works no matter how your host system decided to patch tar.</para>
 
 <para>If a file is just tar'ed, it is unpacked by running:</para>
 
-<para><screen><userinput>tar -xvf filename.tar</userinput></screen></para>
+<para><screen><userinput>tar xvf filename.tar</userinput></screen></para>
 
 <para>When an archive is unpacked, a new directory will be created under the
 current directory (and this book assumes that the archives are unpacked