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

2012/endoh1/README.md

@@ -5,19 +5,22 @@ Yusuke Endoh\
 <https://github.com/mame/>\
 Mastodon: [@mame@ruby.social](https://ruby.social/@mame)
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To use:
 
 ```sh
 ./endoh1 < configuration.txt
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 ./endoh1 < endoh1.c
@@ -45,6 +48,7 @@ make alt
 
 Use `endoh1.alt` as you would `endoh1` above.
 
+
 ## Judges' remarks:
 
 Let's play [Jeopardy!](https://en.wikipedia.org/wiki/Jeopardy!)
@@ -60,6 +64,7 @@ happy to experiment with.
 
 One configuration file was inspired by an [XKCD what if? entry](http://whatif.xkcd.com/6/).
 
+
 ## Author's remarks:
 
 ### Synopsis
@@ -200,6 +205,7 @@ after the contest.
 The judges and HAMANO Tsukasa (The silver medalist at this IOCCC) kindly
 provided many configuration files.
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.