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

1994/horton/README.md

@@ -4,6 +4,7 @@ Mary Ann Horton\
 US\
 <https://maryannhorton.com>
 
+
 ## To build:
 
 ```sh
@@ -43,6 +44,7 @@ Try to figure out how this program prints, for a given slope, the
 right character.  And for extra credit, try to figure out which
 character is at the bottom on this hint file.  :-)
 
+
 ## Author's remarks:
 
 Run it with any 4 numeric arguments, e.g. `./horton 3 2 1 0`.  Play with the
@@ -99,6 +101,7 @@ Sept/Oct 1992; Pages 28-31
       ,      MMMM,MMMM"M"M"M,MM,M,",    "
 ```
 
+
 ## Copyright and CC BY-SA 4.0 License:
 
 This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.