replace trailing whitespace with blackslash in README.md

As an alternative to the markdown trailing whitespace as a line
break, we use a trailing blackslash as a markdown line break.

1998/schweikh2/README.md

@@ -1,7 +1,7 @@
 # Most Erratic Behavior
 
-Jens Schweikhardt  
-Germany  
+Jens Schweikhardt\
+Germany\
 <http://www.schweikhardt.net>