change use of <br> with blackslash for markdown line breaks

1988/dale/README.md

@@ -1,6 +1,6 @@
 # Best abuse of system calls
 
-Paul Dale<br>
+Paul Dale\
 Australia
 
 ## To build:
@@ -46,7 +46,7 @@ detail, see [thanks-for-fixes.md](/thanks-for-fixes.md).
 
 ## Judges' remarks
 
-This entry has a very twisted flow of control via recursion, iteration\
+This entry has a very twisted flow of control via recursion, iteration
 and multi-processing.  Try to understand what is being done with the
 system calls.