move fix thanks a file, update top level html links, rename CONTRIBUTING.md

The fix thank you's have been moved from `README.md` to
`thanks-for-fixes.md`.

**WARNING**: Some mistakes may have been made in doing this.
We presume later changes by others will correct any issues.

The `CONTRIBUTING.md` was renamed `how-to-enter.md`.

A 3rd line of links was added to top level html such as
`contact.html`, `index.html`, `judges.html`, `winners.html`,
and `years.html`.

Improved blank line use in a number (but not all) `README.md` files.

2001/ctk/README.md

@@ -5,22 +5,20 @@ Chris King
 Foster, RI, 02825  
 US  
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To run:
 
 ```sh
 ./ctk
 ```
 
-The ANSI escape codes were no longer valid but [Yusuke
-Endoh](/winners.html#Yusuke_Endoh) provided a patch to fix the ANSI escape
-codes. This works with macOS as well. Thank you Yusuke!
-
 
 ## Try:
 
@@ -31,6 +29,7 @@ echo "Do or do not. There is no try."
 Make sure to hit `q` to exit or else your terminal will be messed up (to restore
 it you can try `stty sane` or `reset`).
 
+
 ## Judges' remarks:
 
 No matter how careful you are, this guy eventually crashes.  Most people
@@ -38,6 +37,7 @@ can make at least one successful road trip without crashing.
 
 This is, of course, another of the retro games.
 
+
 ## Author's remarks:
 
 This is a game based on an Apple ][ Print Shop Companion [Easter
@@ -57,6 +57,7 @@ vertically!).
 
 [1]: https://en.wikipedia.org/wiki/Easter_egg_(media)#In_computing
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.