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

2013/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 [file.lazy]
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 ./endoh1 hello.lazy
@@ -28,6 +31,7 @@ echo Hello | ./echo\
 
 Be patient with the last one.
 
+
 ## Judges' remarks:
 
 We liked this entry because it can serve as a standalone program as well as an
@@ -37,6 +41,7 @@ the program itself.
 This entry can be considered an abuse of the GCC's optimizer; it takes GCC about
 4x longer to compile it with -O3 than without, compared to clang's 2x.
 
+
 ## Author's remarks:
 
 ### Remarks
@@ -218,7 +223,6 @@ ask you one question.  Can you tell what `v
 s[]={0,0,s+6,s+2,s+4,s,s+3,s+5,s+1};` is?  I found this by using SMT solver.
 
 
-
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.