Fixed an internal link.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3728 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter04/creatingtoolsdir.xml

@@ -9,7 +9,7 @@
 
 <para>All programs compiled in <xref linkend="chapter-temporary-tools"/> will be installed under <filename
 class="directory">$LFS/tools</filename> to keep them separate from the
-programs compiled in <xref linkend="chapter-temporary-tools"/>. The programs compiled here are only
+programs compiled in <xref linkend="chapter-building-system"/>. The programs compiled here are only
 temporary tools and won't be a part of the final LFS system and by keeping them
 in a separate directory, we can later easily throw them away. This also
 helps prevent them from ending up in your host's production directories