'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/giles/README.md

@@ -26,11 +26,11 @@ make
 # Use an audio player to play jenny.wav
 ```
 
-## Judges' comments:
+## Judges' remarks:
 
 A cross platform utility for both encoding and decoding tones.
 
-## Author's comments:
+## Author's remarks:
 
 ### Introduction and Usage