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.

1993/rince/README.md

@@ -49,7 +49,7 @@ and
 
 to another value like 18 or 19 which you can do with the alternate code.
 
-In the case of [rince.alt2.c](rince.alt2.c) the movement keys for the default
+In the case of [rince.alt2.c](%%REPO_URL%%/1993/rince/rince.alt2.c) the movement keys for the default
 game are slightly different and will feel more familiar to vi users: `h` for
 left, `l` for right (that was not changed) and `k` for fire (that was also not
 changed).

1993/rince/index.html

@@ -397,7 +397,7 @@ value 17 in the lines:</p>
 <p>and</p>
 <pre><code>    refresh(),c=select(k,&amp;y,0,0,(v.tv_usec=1&lt;&lt;17,&amp;v))?getch():0;</code></pre>
 <p>to another value like 18 or 19 which you can do with the alternate code.</p>
-<p>In the case of <a href="rince.alt2.c">rince.alt2.c</a> the movement keys for the default
+<p>In the case of <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1993/rince/rince.alt2.c">rince.alt2.c</a> the movement keys for the default
 game are slightly different and will feel more familiar to vi users: <code>h</code> for
 left, <code>l</code> for right (that was not changed) and <code>k</code> for fire (that was also not
 changed).</p>