'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'

2020/kurdyukov1/README.md

@@ -38,13 +38,13 @@ make alt
 
 Use `prog.alt` as you would `prog` above.
 
-## Judges' comments:
+## Judges' remarks:
 
 This hash of a C code makes a hash out of input.
 Do you understand how?
 You should get a-round-to-it figuring it out!
 
-## Author's comments:
+## Author's remarks:
 
 ### MD5 with integers