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.

1994/weisberg/README.md

@@ -77,7 +77,7 @@ event of a system shutdown or reboot.
 
 ### Bugs
 
-The alternative version ([weisberg.alt.c](weisberg.alt.c)) has never actually run
+The alternative version ([weisberg.alt.c](%%REPO_URL%%/1994/weisberg/weisberg.alt.c)) has never actually run
 to completion. After running for close to a week it had reached somewhere around
 250e6, when it became necessary to test the reboot feature (which worked
 remarkably well). As there are quite a lot of primes to be found before reaching

1994/weisberg/index.html

@@ -413,7 +413,7 @@ run to completion, so as an added feature, it will cease execution upon
 reception of a signal (any will do equally well), as well as in the
 event of a system shutdown or reboot.</p>
 <h3 id="bugs">Bugs</h3>
-<p>The alternative version (<a href="weisberg.alt.c">weisberg.alt.c</a>) has never actually run
+<p>The alternative version (<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1994/weisberg/weisberg.alt.c">weisberg.alt.c</a>) has never actually run
 to completion. After running for close to a week it had reached somewhere around
 250e6, when it became necessary to test the reboot feature (which worked
 remarkably well). As there are quite a lot of primes to be found before reaching