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.

1995/esde/README.md

@@ -60,13 +60,15 @@ three-digit code. This is the algorithm:
 
 These are the codes:
 
-      0  =  A, E, H, I, O, U, W, Y
-      1  =  B, P, F, V
-      2  =  C, S, G, J, K, Q, X, Z
-      3  =  D, T
-      4  =  L
-      5  =  M, N
-      6  =  R
+```
+0  =  A, E, H, I, O, U, W, Y
+1  =  B, P, F, V
+2  =  C, S, G, J, K, Q, X, Z
+3  =  D, T
+4  =  L
+5  =  M, N
+6  =  R
+```
 
 ### information about an info file: