Add final slash to URL

in README, Guidebook, dat/history. (from <Someone>)

README

@@ -200,7 +200,7 @@ o We don't give hints for playing the game.
 o Don't bother to ask when the next version will be out.  You will not get
   a reply.
 Alternatively, you may fill out the bug report form on our web
-page at http://www.nethack.org.
+page at http://www.nethack.org/.
 
 Patches especially should be directed to this address.  If you've changed
 something to get NetHack to run on your system, it's likely that others have

dat/history

@@ -130,7 +130,7 @@ resurrected it for 3.3.1.
 
 Alex Kompel contributed a new graphical port of 3.3 for Microsoft Windows.
 
-There is a NetHack web site maintained by Ken Lorber at http://www.nethack.org.
+There is a NetHack web site maintained by Ken Lorber at http://www.nethack.org/.
 
 			   - - - - - - - - - -
 

doc/Guidebook.mn

@@ -4,7 +4,7 @@
 .ds vr "NetHack 3.3
 .ds f0 "\*(vr
 .ds f1
-.ds f2 "January 26, 2002
+.ds f2 "February 3, 2002
 .mt
 A Guide to the Mazes of Menace
 (Guidebook for NetHack)
@@ -2353,7 +2353,7 @@ resurrected it for 3.3.1.
 .pg
 \fBAlex Kompel\fP contributed a new graphical port of 3.3 for Microsoft Windows.
 .pg
-There is a NetHack web site maintained by \fBKen Lorber\fP at http://www.nethack.org.
+There is a NetHack web site maintained by \fBKen Lorber\fP at http://www.nethack.org/.
 .pg
 			   - - - - - - - - - -
 .pg

doc/Guidebook.tex

@@ -39,7 +39,7 @@
 %.au
 \author{Eric S. Raymond\\
 (Extensively edited and expanded for 3.3)}
-\date{January 26, 2002}
+\date{February 3, 2002}
 
 \maketitle
 
@@ -2929,7 +2929,7 @@ resurrected it for 3.3.1.
 %.pg
 \medskip
 \nd There is a NetHack web site maintained by {\it Ken Lorber} at 
-http:{\tt /}{\tt /}www.nethack.org.
+http:{\tt /}{\tt /}www.nethack.org{\tt /}.
 
 %.pg
 \bigskip