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.

2018/ferguson/README.md

@@ -64,14 +64,14 @@ man ./weasel.man
 
 ## Author's remarks:
 
-    0. Preface
-    1. What it is
-    2. How it works
-    3. Hints (Keyboards, Options, Spoilers, Example Invocations)
-    4. Obfuscation (Techniques, Beauty)
-    5. How to build (S and N Constants, Compilation, Portability, Installing)
-    6. Final thoughts
-    7. Winning comments, thanks, dedications, links, etc.
+0. Preface
+1. What it is
+2. How it works
+3. Hints (Keyboards, Options, Spoilers, Example Invocations)
+4. Obfuscation (Techniques, Beauty)
+5. How to build (S and N Constants, Compilation, Portability, Installing)
+6. Final thoughts
+7. Winning comments, thanks, dedications, links, etc.
 
 ## **0. Preface**