fix many internal links

Fixed a number of internal links that need to
go to the GitHub site.

Ran `make www` to perform the above.

1998/schnitzi/index.html

@@ -422,7 +422,7 @@ the letter <code>e</code>.</p>
 <p>The IOCCC has been no stranger to this concept. Several winning entries from
 years past have accomplished interesting feats while completely avoiding the use
 of certain C constructs thought to be essential (e.g.
-<a href="../../1988/robison/robison.c">1988/robison.c</a>). If you have to ask why they would
+<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1988/robison/robison.c">1988/robison.c</a>). If you have to ask why they would
 do it this way, then this contest just isn’t for you.</p>
 <p>In continuing with this fine tradition, this program suggests to the ANSI
 committee some new practical simplifications for the C language. For instance,