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.

2006/toledo3/README.md

@@ -5,24 +5,20 @@ Familia Toledo
 Mexico  
 <https://nanochess.org>  
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To run:
 
 ```sh
 ./toledo3 [1 | 2 | 3 [b]]
 ```
 
-[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed a crash and a
-display problem in this entry so that it now works in modern (64-bit) systems.
-The problem was that it relied on 32-bits so some `int`s were changed to
-`long`s. At this time we don't have an easy way to test this theory but it might
-be that using `-m32` would let this work in 32-bit systems. Thank you Cody for
-your assistance!
 
 ## Try:
 
@@ -30,6 +26,7 @@ your assistance!
 ./toledo3 1
 ```
 
+
 ### Alternate versions:
 
 The author provided two additional versions, [toledo3-sbar.c](toledo3-sbar.c)
@@ -46,6 +43,7 @@ since it's clearly spelled out in the code.  The interesting
 question is whether this is easier or harder to understand than
 the code for Deep Blue.
 
+
 ## Author's remarks:
 
 There are so many text-based chess programs, what is that of
@@ -131,6 +129,7 @@ rules) creates a status display about gameplay on the window title bar.
 
 Using [toledo3-txt.c](toledo3-txt.c) turns this into being purely text based.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.