Corrected iproute2 patch name

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3952 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter03/patches.xml

@@ -103,7 +103,7 @@ following:</para>
 <varlistentry>
 <term>IPRoute2 Disable DB Patch - 1 KB:</term>
 <listitem>
-<para><ulink url="&patches-root;iproute2-&iproute2-version;-remove_db-1.patch"/></para>
+<para><ulink url="&patches-root;iproute2-&iproute2--patch-version;-remove_db-1.patch"/></para>
 </listitem>
 </varlistentry>