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.

2011/goren/README.md

@@ -3,23 +3,20 @@
 Uri Goren  
 <goren.uri@gmail.com>  
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To run:
 
 ```sh
 echo "some text" | ./goren
 ```
 
-[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed this for macOS.
-Before the fix it segfaulted. It worked fine under linux. After fixing it it was
-noticed that the author stated it does not work for 64-bit so it was then tested
-as a 32-bit binary (linux) and 64-bit binary (linux, macOS) and both work. It
-was fixed by changing some `int`s to `long`s. Thank you Cody!
 
 ## Try:
 
@@ -27,6 +24,7 @@ was fixed by changing some `int`s to `long`s. Thank you Cody!
 echo "Hello, world!" | ./goren
 ```
 
+
 ## Judges' remarks:
 
 In the words of [René François Ghislain Magritte Magritte](http://en.wikipedia.org/wiki/Rene_Magritte):
@@ -47,6 +45,7 @@ echo '| is just a representation of a pipe because I say so! So stuff it!' | ./g
 
 something happens!  Why?
 
+
 ## Author's remarks:
 
 This program was written in homage to [Rene
@@ -97,6 +96,7 @@ mostly with gcc on Linux.
 It doesn't support 64 bits (due to integer-pointer casts, and a >>31).
 It does work on 64-bit Linux, because all functions are below 4GB.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.