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.

2000/briddlebane/README.md

@@ -4,14 +4,13 @@ Moxen N. Briddlebane
 
 Lord Zarbon  
 
+
 ## To build:
 
 ```sh
 make
 ```
 
-[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed this to compile
-in systems that require one to explicitly link in `libm`. Thank you Cody!
 
 ## To run:
 
@@ -42,6 +41,7 @@ inclusive!).  Without this it results in an error in the encoding of
 the way it assigns variables to memory) it will terminate "decrepit"
 with the character `'\200'` (the last value of `F`) instead of `'\0'`.
 
+
 ## Author's remarks:
 
 This program was broadcast from deep within the Zarbonic Cluster
@@ -62,6 +62,7 @@ it is necessary to resort to trigonometric functions to handle
 it.  One of the real mysteries involves the numbers `114` and
 `2`, which are, according to Lord Zarbon, very deliberate.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.