'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'

1986/wall/README.md

@@ -42,7 +42,7 @@ make CFLAGS+="-traditional-cpp" alt
 
 Use `./wall.alt` as you would `./wall`.
 
-## Judges' comments:
+## Judges' remarks:
 
 The original version did not have a ';' character in the first line.
 This caused a number of System V C pre-preprocessors to gripe about a
@@ -54,7 +54,7 @@ the warning message generated by the C compiler.  Then execute the
 program and type characters into its standard input.  You will see why
 the compiler documents the program.
 
-## Author's comments:
+## Author's remarks:
 
 No comments were provided by the author.