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.

1994/ldb/README.md

@@ -4,26 +4,13 @@ Laurion Burchall
 US  
 <https://web.archive.org/web/20070711215750/http://www.netspace.org/users/ldb/>
 
+
 ## To build:
 
 ```sh
 make all
 ```
 
-[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed this so it would
-compile and work with modern compilers. The problem was that `srand()` returns
-void but it was used in a `||` expression. Thus the comma operator was needed.
-Cody also changed the entry to use `fgets()` instead of `gets()` to make it safe
-for lines greater than 231 in length and to prevent a warning at linking or at
-runtime, the latter of which can be interspersed with output of the program.
-Note that this now prints a newline after the output but this seems like a
-worthy compromise for making it safer (fixing it is more problematic than it is
-worth). In macOS another line of output would be shown anyway namely the warning
-that it uses gets(). A subtlety about this fix: if a line is greater than 231 in
-length if the program chooses that line it might print the first 231 characters
-or it might print (up to) the next 231 characters and so on. Thank you Cody for
-your assistance!
-
 
 ## To run:
 
@@ -44,6 +31,7 @@ printf "The International Obfuscated C Code Contest\n
 	by Laurion Burchall" | ./ldb
 ```
 
+
 ## Judges' remarks:
 
 Trigraphs are natural obfuscators.  Most C-beautifiers become C-uglifiers
@@ -52,11 +40,13 @@ because they don't handle them correctly.
 Can you figure out how it prints a given random line (or if the line is longer
 than 231 characters, part of that line) from stdin?
 
+
 ## Author's remarks:
 
 All input lines must be under 232 characters long.  The compiling
 platform should be ASCII based.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.