fix the typos

[howjmay]

Summary
Fix some typos

Related Issues
Links (e.g. closes #123).

Proposed Changes

Checklist

• Tests pass locally
• Documentation updated if needed

[CLAassistant]

All committers have signed the CLA.

[krant]

Hi @howjmay, thanks for the contribution!
Bear in mind that src/generated/meshtastic.rs is generated from .proto files, so if you would like to fix typos there you should go to corresponding repo, otherwise your changes will be lost upon the next protobufs update. For the same reason your format changes in meshtastic.rs makes no sense either. I'd suggest to exclude src/generated/meshtastic.rs from this PR.

[howjmay]

Hi @krant, thanks for pointing out. I have excluded meshtastic.rs from the change.
One another question. I am very interested in contributing to this project. But I didn't see many open issues. May I ask are there any features/tasks on the TODO list now?
Thanks