tcl: fix the name of doc tarball

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@12099 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter08/tcl.xml

@@ -57,7 +57,7 @@
 
     <para>First, unpack the documentation by issuing the following command:</para>
 
-<screen><userinput remap="pre">tar -xf ../tcl8.6.10-html.tar.gz --strip-components=1</userinput></screen>
+<screen><userinput remap="pre">tar -xf ../tcl&tcl-version;-html.tar.gz --strip-components=1</userinput></screen>
 
     <para>Prepare Tcl for compilation:</para>