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

1987/korn/README.md

@@ -3,18 +3,21 @@
 David Korn\
 US
 
+
 ## To build:
 
 ```sh
 make all
 ```
 
+
 ## To use:
 
 ```sh
 ./korn
 ```
 
+
 ## Judges' remarks:
 
 The Judges believe that this is the best one line entry ever received.
@@ -61,6 +64,7 @@ improved version of the [/bin/sh](https://en.wikipedia.org/wiki/Bourne_shell).
 The source for [v7](https://en.wikipedia.org/wiki/Version_7_Unix)'s /bin/sh
 greatly inspired this contest.
 
+
 ## Author's remarks:
 
 No remarks were provided by the author.