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/banks/README.md

@@ -1,10 +1,10 @@
 # Best of Show
 
-Carl Banks  
-Penn State Department of Aerospace Engineering  
-232 Hammond Building  
-University Park, PA 16802  
-US  
+Carl Banks\
+Penn State Department of Aerospace Engineering\
+232 Hammond Building\
+University Park, PA 16802\
+US\
 <https://blog.aerojockey.com/post/iocccsim>
 
 ## To build: