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

2020/endoh2/README.md

@@ -4,19 +4,22 @@ Yusuke Endoh\
 <https://github.com/mame/>\
 Mastodon: [@mame@ruby.social](https://ruby.social/@mame)
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To use:
 
 ```sh
 ./prog
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 ./prog
@@ -28,6 +31,7 @@ make
 ./prog bear.txt
 ```
 
+
 ## Judges' remarks:
 
 Clever use of the C99 complex data type. The [spoiler](spoiler/) directory
@@ -37,6 +41,7 @@ shapes.
 With the source from the [spoiler](spoiler/) directory could you make the code
 render for a larger terminal window?  How about adding more glyphs?
 
+
 ## Author's remarks:
 
 No!  Try not.  Do, or do not.  There is no try.
@@ -54,6 +59,7 @@ See spoiler.zip for the source code.
 
 [1]: https://en.wikipedia.org/wiki/List_of_the_most_common_passwords
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.