'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'

2015/duble/README.md

@@ -48,7 +48,7 @@ Beautiful penmanship! However, your fonts may vary.
 How does this entry compress the font it uses? What's the purpose of lrand48()?
 Why does the program dump core, when it does :) ?
 
-## Author's comments:
+## Author's remarks:
 
 ### Introduction