- point to busybox-<version>.config

docs/buildroot.html

@@ -249,7 +249,7 @@ $ make HOSTCXX=g++-4.3-HEAD HOSTCC=gcc-4.3-HEAD
     </ol>
 
     <p>Otherwise, you can simply change the
-    <code>package/busybox/busybox.config</code> file if you know the options
+    <code>package/busybox/busybox-&lt;version&gt;.config</code> file if you know the options
     you want to change without using the configuration tool.</p>
     <p>If you want to use an existing config file for busybox, then see 
     section <a href="#environment_variables">environment variables</a>.</p>