Format/typo check 1992/marangon/README.md

1992/marangon/README.md

@@ -22,10 +22,10 @@ NOTE: Some compilers have had trouble optimizing this entry.
 
 NOTE: Some systems need to compile with `-ltermcap` as well as `-lcurses`.
 
-NOTE: The original winning source `marangon.orig.c`, found in the archive
-directory, assumed that exit returns a value which cause problems for some
-systems where exit returns a void.  The file [marangon.c](marangon.c) avoids
-this problem.
+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.
 
 
 ## Author's remarks: