'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'

2012/omoikane/README.md

@@ -34,12 +34,12 @@ cc -o output output.c
 ./output
 ```
 
-## Judges' comments:
+## Judges' remarks:
 
 The judges have nothing to add that has not already been written
 about in the `spoiler.html`` file!  :-)
 
-## Author's comments:
+## Author's remarks:
 
 ### Usage