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

2015/howe/README.md

@@ -4,12 +4,14 @@ Anthony Howe <achowe@snert.com>\
 Montreal, Quebec, Canada\
 <http://www.snert.com/>
 
+
 ## To build:
 
 ```sh
 make
 ```
 
+
 ## To use:
 
 ```sh
@@ -18,7 +20,8 @@ make
 ./prog -d file1 file2
 ```
 
-## Try:
+
+### Try:
 
 ```sh
 ./prog prog.alt.c prog.c
@@ -57,6 +60,7 @@ make alt
 
 Use `prog.alt` as you would `prog` above.
 
+
 ## Judges' remarks:
 
 This is the best use of the FNV that we have seen in the IOCCC so far!
@@ -81,6 +85,7 @@ might be easier than the academic papers it was inspired by.
 NOTE: Unlike the original entry source, prog.alt.c, prog.c uses a
 64 bit FNV hash and fixes a function call warning.
 
+
 ## Author's remarks:
 
 ### Features
@@ -171,6 +176,7 @@ Which hashing algorithm is best for uniqueness and speed?\
 
 [HshCmp]: http://programmers.stackexchange.com/questions/49550/which-hashing-algorithm-is-best-for-uniqueness-and-speed
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.