Fix codespell not running on some files

[tetrapod00]

Codespell was not running on some files.

The current command should check multiple directory levels, but it does not:

codespell -I _tools/codespell-ignore.txt -x _tools/codespell-ignore-lines.txt -S tutorials/i18n/locales.rst {about,community,contributing,getting_started,tutorials}/**/*.rst

It was only checking .rst files that were one directory below the top-level directories (about, community, contributing, etc). It was not checking direct children of the top-level directories, nor was it checking children that were more deeply nested within subdirectories. This means that the entire about section was not being checked at all, since all the pages there are direct children of top-level folders.

This updated command is a crude way to check multiple levels. There should be a better way to do this, but for some reason that way is not just using a single /**/.

codespell -I _tools/codespell-ignore.txt -x _tools/codespell-ignore-lines.txt -S tutorials/i18n/locales.rst {about,community,contributing,getting_started,tutorials}/{*.rst,**/*.rst,**/**/*.rst,**/**/**/*.rst}

One uncaught typo was found with the updated command.

If you want to test out this updated codespell command, or a better alternate, try putting a typo like "1nd" in one file in each folder nesting level, then run the command (either locally or in CI).

[mhilbrunner]

Good catch, thank you.