chore: correct typo docs

[sky-coderay]

Description

• Corrected RCP to RPC
• Corrected mesesages to messages
• Corrected DAO_HARDKFORK_ACCOUNTS to DAO_HARDFORK_ACCOUNTS

I fixed the typos in the comments and also one in the function. I tried really hard—happy to help, thank you!

[Rjected]

normally we would not accept purely typo fix PRs, but changing the name of this constant seems like an improvement and I can't stop seeing the typo now. We do need all usages of the constant changed, should also make sure it builds locally

[sky-coderay]

@Rjected All references have been updated, the project builds successfully. Thanks

[mattsse]

this rename has side effects. we also need to rename other occurrences of this constant

[mattsse]

needs cargo +nightly fmt

please don't open prs from main branch :)

[sky-coderay]

@mattsse I ran cargo +nightly fmt and everything seems fine. Should I rebase now?

[Rjected]

this looks good to me now - no rebase is needed now, but future PRs should be opened from a branch of your personal fork. This is so that we can make touchups if needed :)