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.

1992/lush/README.md

@@ -6,29 +6,20 @@ P.O. Box 6176
 Mississippi State, MS 39762  
 US    
 
+
 ## To build:
 
 ```sh
 make all
 ```
 
+
 ## To run:
 
 ```sh
 ./runme.sh
 ```
 
-
-[Yusuke Endoh](/winners.html#Yusuke_Endoh) supplied a patch which makes this
-work with gcc. Due to how it works (see Judges' remarks below) this will not
-work with clang. Thank you Yusuke!
-
-[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) made it use `fgets()`
-instead of `gets()` to prevent annoying warnings getting in the way and also
-added the `runme.sh` script to demonstrate it (using make was problematic). Cody
-notes that unfortunately this does not work with clang due to different compiler
-messages. Thank you Cody!
-
 For the original entry see the [archive tarball](/archive/archive-1992.tar.bz2).
 
 
@@ -38,12 +29,14 @@ The program uses error messages issued by the C Preprocessor to
 generate its message to the world.  One program's error is another 
 program's data!
 
+
 ## Author's remarks:
 
 This program is yet another "Hello World." program with a twist.  The
 string Hello World has been encoded in the error messages the compiler
 generates when compiling the source.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.