fix standard headers and header spacing in winner README.md files

2000/bellard/README.md

@@ -6,24 +6,28 @@ Fabrice Bellard\
 France\
 <https://bellard.org>
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To use:
 
 ```sh
 ./bellard
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 Do. Or do not. There is no try. :-)
 ```
 
+
 ## Judges' remarks:
 
 This code is a nice compact example of a Modular Fast Fourier Transform.  While
@@ -45,6 +49,7 @@ of time (the usual method would take ages !).
 The program uses >= 64 bit 'long long' type. It should run on any
 system with a gcc compiler.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.