clean up confusing instruction

svn:r2634

doc/tor-doc.html

@@ -229,8 +229,9 @@ too. If you're the paranoid sort, feel free to <a
 href="http://wiki.noreply.org/wiki/TheOnionRouter/TorInChroot">put it
 into a chroot jail</a>.)</p>
 
-<p>First, copy torrc.sample to torrc (by default it's in
-/usr/local/etc/tor/), and edit the middle part. Create the DataDirectory,
+<p>First, copy torrc.sample to torrc (in the default configuration this
+means copy /usr/local/etc/tor/torrc.sample to /usr/local/etc/tor/torrc),
+and edit the middle part. Create the DataDirectory,
 and make sure it's owned by the uid/gid that will be running tor. Fix your system
 clock so it's not too far off. Make sure name resolution works. Make sure
 each process can get to 1024 file descriptors (this should be already