fix internal links in entry index.html from 1984 thru 2012

2006/sloane/README.md

@@ -41,7 +41,7 @@ code](#original-code) was being used, you can do:
 ## Original code:
 
 Should you wish to see the original you may do so with the original code,
-[sloane.c](sloane.c).
+[sloane.c](%%REPO_URL%%/2006/sloane/sloane.c).
 
 
 ### Original build:

2006/sloane/index.html

@@ -173,7 +173,7 @@ code</a> was being used, you can do:</p>
     ./sloane.alt</code></pre>
 <h2 id="original-code">Original code:</h2>
 <p>Should you wish to see the original you may do so with the original code,
-<a href="sloane.c">sloane.c</a>.</p>
+<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2006/sloane/sloane.c">sloane.c</a>.</p>
 <h3 id="original-build">Original build:</h3>
 <pre><code>    make clobber all</code></pre>
 <h3 id="original-use">Original use:</h3>