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

2020/yang/README.md

@@ -3,19 +3,22 @@
 Don Yang\
 <http://uguu.org/>
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To use:
 
 ```sh
 ./prog [PIN] < input.txt > output.c
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 echo "International Obfuscated C Code Contest 2020" | ./prog 23209 > code.c
@@ -35,6 +38,7 @@ cc -DPIN=23209 code.c -o decoded	# wait for it ...
 # weeeeeeeeeeeeee! You are having a good time!
 ```
 
+
 ## Judges' remarks:
 
 You might think of this entry as code obfuscater with a code.
@@ -45,6 +49,7 @@ What is compiling this entry about?
 This winning entry also comes with a [JavaScript timelapse
 spoiler](spoiler.html) that shows how this entry was written.
 
+
 ## Author's remarks:
 
 ### Synopsis
@@ -145,6 +150,7 @@ with this entry to preprocess the generated output to make them more
 acceptable to typical compilers.  View the [cppp.cc](cppp.cc) source and
 then compile it with a c++ compiler of your choice.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.