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.

1992/vern/README.md

@@ -1,11 +1,11 @@
 # Best of Show
 
-Vern Paxson  
-Lawrence Berkeley Laboratory  
-Computer Systems Engineering  
-Bldg. 46A, Room 1123  
-Lawrence Berkeley Laboratory  
-1 Cyclotron Rd.  
+Vern Paxson\
+Lawrence Berkeley Laboratory\
+Computer Systems Engineering\
+Bldg. 46A, Room 1123\
+Lawrence Berkeley Laboratory\
+1 Cyclotron Rd.\
 Berkeley, CA 94720  US
 
 ## To build: