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

2020/carlini/README.md

@@ -3,25 +3,29 @@
 Nicholas Carlini <nicholas@carlini.com>\
 <https://nicholas.carlini.com>
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To use:
 
 ```sh
 ./prog
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 # Play with a friend, P1 and P2, squares are numbered 1..9
 ./prog
 ```
 
+
 ## Judges' remarks:
 
 This program consists of a single print statement wrapped in a while loop. You
@@ -29,6 +33,7 @@ would not think that this would amount to much, but you would be very, very
 wrong. A clue to what is happening and how this works is encoded in the
 ASCII art of the program source.
 
+
 ## Author's remarks:
 
 HOW ABOUT A NICE GAME OF <strike>CHESS</strike>TIC-TAC-TOE?
@@ -317,6 +322,7 @@ block before the first `printf()`, but we initialize the `scanf()` format to the
 string so that it returns right away without blocking. The first time the `printf()`
 call runs, it writes out `"%hhd"` to create the `scanf()` format string.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.