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

2012/hou/README.md

@@ -4,19 +4,22 @@ Qiming Hou\
 <hqm03ster@gmail.com>\
 <http://www.houqiming.net>
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To use:
 
 ```sh
 ./hou syntax-file file-to-process
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 less hou.c
@@ -40,6 +43,7 @@ hou html.txt hou.c >> hou.htm
 start hou.htm
 ```
 
+
 ## Judges' remarks:
 
 What a versatile entry! It can be used to check the size of IOCCC entries *and*
@@ -47,6 +51,7 @@ to publish them as HTML.
 
 For extra credit: what is the meaning of the number `2321237`?
 
+
 ## Author's remarks:
 
 ### Disclaimer
@@ -136,6 +141,7 @@ As an extra tweak, the text message actually does something useful. Remove the
 
 [2][Regular Expression Matching Can Be Simple And Fast (but is slow in Java, Perl, PHP, Python, Ruby, ...)](http://swtch.com/~rsc/regexp/regexp1.html)
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.