Remove misspell references

guides/source/contributing_to_ruby_on_rails.md

@@ -305,21 +305,7 @@ For `rails-ujs` CoffeeScript and JavaScript files, you can run `npm run lint` in
 
 #### Spell Checking
 
-We are running [misspell](https://github.com/client9/misspell) which is mainly written in
-[Golang](https://golang.org/) to check spelling with [GitHub Actions](https://github.com/rails/rails/blob/main/.github/workflows/lint.yml). Correct
-commonly misspelled English words quickly with `misspell`. `misspell` is different from most other spell checkers
-because it doesn't use a custom dictionary. You can run `misspell` locally against all files with:
-
-```bash
-$ find . -type f | xargs ./misspell -i 'aircrafts,devels,invertions' -error
-```
-
-Notable `misspell` help options or flags are:
-
-- `-i` string: ignore the following corrections, comma separated
-- `-w`: Overwrite file with corrections (default is just to display)
-
-We also run [codespell](https://github.com/codespell-project/codespell) with GitHub Actions to check spelling and
+We run [codespell](https://github.com/codespell-project/codespell) with GitHub Actions to check spelling and
 [codespell](https://pypi.org/project/codespell/) runs against a [small custom dictionary](https://github.com/rails/rails/blob/main/codespell.txt).
 `codespell` is written in [Python](https://www.python.org/) and you can run it with: