Fix some typos

[ydah]

• "assignement" -> "assignment"
• "indicies" -> "indices"
• "RedndantSelf" -> "RedundantSelf"
• "correcly" -> "correctly"
• "arugment" -> "argument"
• "undersoce"-> "underscore"
• "regesters" -> "registers"
• "whtn" -> "when"
• "ergister" -> "register"
• "redendant" -> "redundant"
• "officense" -> "offense"
• "exitted" -> "exited"

---

Before submitting the PR make sure the following are checked:

• The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
• Wrote good commit messages.
• [-] Commit message starts with [Fix #issue-number] (if the related issue exists).
• Feature branch is up-to-date with master (if not - rebase it).
• Squashed related commits together.
• [-] Added tests.
• Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
• [-] Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.
• [-] If this is a new cop, consider making a corresponding update to the Rails Style Guide.

[koic]

Interesting. Did you find this byany checking tool?

[ydah]

cspell and ”my eyes" visually detect these typos.
In this case, you can do $ cspell . /**/* and visually check and fix any suspicious parts.

I wish there was a better way.

[koic]

I get it! Thank you!