fix improper use of whitespace in README.md files

The use of the markdown trailing whitespace to indicate
line break should NOT be done when the following line is empty.

This removes such improper use of whitespace in README.md files.

1994/schnitzi/README.md

@@ -5,7 +5,7 @@ ISX Corporation
 1165 Northchase Pkwy, Suite 120  
 Marietta, GA 30067  
 US  
-<http://computronium.org/ioccc.html>  
+<http://computronium.org/ioccc.html>
 
 
 ## To build:
@@ -68,7 +68,7 @@ would be run as follows:
 
 ```sh
 schnitzi < info
-``` 
+```
 
 The program generates interesting results when its source file is
 used as input: