Prep to move 1988-2004 entries into subdirs

Make changes to links impacted when we move 1988-2004 entries
from all of a year's winning entries in a single directory
to each winner being in their own sub-directory under the
given year directory.

2020/ferguson2/hint.text

@@ -660,8 +660,8 @@ don't think there need be any addition to the recode program - at least not
 that.
 
 
-[1992 Worst Abuse of the Rules]: http://www.ioccc.org/1992/nathan.hint
-[1998 ASCII / Morse code translator]: http://www.ioccc.org/1998/dorssel.hint
+[1992 Worst Abuse of the Rules]: http://www.ioccc.org/1992/nathan/nathan.hint
+[1998 ASCII / Morse code translator]: http://www.ioccc.org/1998/dorssel/dorssel.hint
 [2014 Morse audio transcoder]: http://www.ioccc.org/2014/vik/hint.text
 [Enigma Message Procedures]: http://users.telenet.be/d.rijmenants/en/enigmaproc.htm
 [Interactive Enigma Machine]: http://enigmaco.de/enigma/enigma.html