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.

2004/arachnid/README.md

@@ -4,18 +4,21 @@ Nick Johnson
 New Zealand  
 <https://web.archive.org/web/20051030162356/http://www.notdot.net/>  
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To run:
 
 ```sh
 ./arachnid [mazefile]
 ```
 
+
 ## Try:
 
 ```sh
@@ -32,12 +35,10 @@ Navigation is through the use of the `wasd` inverted-T formation on
 QWERTY keyboards.  Rogue players, vi users, and Dvorak typists are
 invited to get lost (or use the alt version)!
 
+
 ### Alternate code
 
-[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) added an alternate
-version which allows those like himself used to `h`, `j`, `k` and `l` movement
-keys to not get lost. Non rogue players, vi users and Dvorak typists are invited
-to get lost (or use the original version)! To use:
+To use:
 
 ```sh
 make alt
@@ -45,8 +46,6 @@ make alt
 
 Use `arachnid.alt` as you would `arachnid` above.
 
-Thank you Cody!
-
 
 ## Judges' remarks:
 
@@ -82,6 +81,7 @@ explorers out there.
 
 You can explore the maze using the `w`,`a`,`s`, and `d` keys.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.