'comments' -> 'remarks' in all README.md files

As in

    sgit -e 's/\([Aa]uthor.*\)comments/\1remarks/g' -e 's/\([Jj]udge.*\)comments/\1remarks/g' '*README.md'

1989/vanb/README.md

@@ -17,7 +17,7 @@
 	./vanb the rug gary lent	
 	./vanb unix is better than os/2
 
-## Judges' comments:
+## Judges' remarks:
 
 This program computes all proper subsets of the set of
 arguments passed to it.  Each subset is printed with one