* sed: improve description of -i option The original description makes it sound like sed would wait for additional input while it actually just modifies the specified file in-place. * Stylistic improvement to sed.md Minor stylistic improvements to the in place flag. Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com> --------- Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>