Update README.rst Update the README to elaborate on case-sensitivity in ignored words and dictionaries. Add an additional "Ignoring Words" section, with internal link from the "noteworthy flags" overview. Co-authored-by: Peter Newman <peternewman@users.noreply.github.com> Co-authored-by: Dimitri Papadopoulos Orfanos <3234522+DimitriPapadopoulos@users.noreply.github.com>