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

1998/schweikh1/README.md

@@ -113,6 +113,7 @@ Use `schweikh1.alt` as you would `schweikh1` above.
 
 Bonus exercise: modify the code to provide a different compiler.
 
+
 ## Judges' remarks:
 
 What does it do?  It seems to print a list of system headers, perhaps