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.

2000/rince/README.md

@@ -129,13 +129,13 @@ from inside the monitor whilst standing on your head. In case of
 confusion, please consult the following chart (\*):
 
 ```
-			       N
-			       ^
-			       |
-			 E <---+---> W
-			       |
-			       v
-			       S
+	       N
+	       ^
+	       |
+	 E <---+---> W
+	       |
+	       v
+	       S
 ```
 
 (\*) Not to scale.