cleanup winner README.md files

Fixed cases where there was a bad trailing backslash.

Improved a few cases where a code block was needed
to highlight some text.

Changed a few cases where a code block needed to
declared as, say, a sh code block.

Fixed a few cases where the winner information was not properly formatted.

Plus a few nits and clarifying text was added.

1996/jonth/README.md

@@ -5,7 +5,7 @@ University of Oslo\
 Gaustadveien 10B\
 N 0372 Oslo\
 Norway\
-http://www.uio.no/~jonth/
+<http://www.uio.no/~jonth/>
 
 
 ## To build: