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

1992/kivinen/README.md

@@ -79,7 +79,7 @@ Such systems should compile using `-lX11`.
 
 NOTE: The original winning source [kivinen.orig.c](kivinen.orig.c) assumed that
 `exit(3)` returned a value which cause problems for some systems where `exit(3)` returns
-`void`.  The file [kivinen.c](kivinen.c) avoids this problem.
+`void`.  The file [kivinen.c](%%REPO_URL%%/1992/kivinen/kivinen.c) avoids this problem.
 
 
 ## Author's remarks: