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

1992/marangon/README.md

@@ -25,7 +25,7 @@ NOTE: Some systems need to compile with `-ltermcap` as well as `-lcurses`.
 NOTE: The original winning source [marangon.orig.c](marangon.orig.c), found in
 the archive directory, assumed that `exit(3)` returns a value which cause
 problems for some systems where `exit(3)` returns a `void`.  The file
-[marangon.c](marangon.c) avoids this problem.
+[marangon.c](%%REPO_URL%%/1992/marangon/marangon.c) avoids this problem.
 
 
 ## Author's remarks:

1992/marangon/index.html

@@ -165,7 +165,7 @@ are not careful, you may find things “at 6’s and 7’s”. :-)</p>
 <p>NOTE: The original winning source <a href="marangon.orig.c">marangon.orig.c</a>, found in
 the archive directory, assumed that <code>exit(3)</code> returns a value which cause
 problems for some systems where <code>exit(3)</code> returns a <code>void</code>. The file
-<a href="marangon.c">marangon.c</a> avoids this problem.</p>
+<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1992/marangon/marangon.c">marangon.c</a> avoids this problem.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>It starts off by creating a table with number 5 in all places. The CPU melts
 the numbers and you must return them in original state. When you increase a