could add link REL

[jidanni@jidanni.org]

I notice file:///usr/share/doc/galax/doc/tutorial.html has no LINK REL NEXT

So one can't use

   SPC runs the command w3m-scroll-up-or-next-url, which is an
   interactive compiled Lisp function in `w3m.el'.

   It is bound to SPC.

   (w3m-scroll-up-or-next-url ARG)

   Scroll the current window up ARG lines, or go to the next page.

to go to the next page.