Fix typos

[jayvdb]

Description

Fix typos

Checklist

• Formatted code using cargo fmt --all
• Linted code using clippy
  • with reqwest feature: cargo clippy --manifest-path influxdb/Cargo.toml --all-targets --no-default-features --features serde,derive,reqwest-client-rustls -- -D warnings
  • with surf feature: cargo clippy --manifest-path influxdb/Cargo.toml --all-targets --no-default-features --features serde,derive,hyper-client -- -D warnings
• Updated README.md using cargo doc2readme -p influxdb --expand-macros
• Reviewed the diff. Did you leave any print statements or unnecessary comments?
• Any unfinished work that warrants a separate issue captured in an issue with a TODO code comment

[msrd0]

Thanks

[Empty2k12]

This requires a min rustc bump to 1.70 from 1.65

[jayvdb]

I was able to get the existing MSRV of 1.65 working at #157

[jayvdb]

You can see this works at https://github.com/jayvdb/influxdb-rust/tree/fix-msrv

[msrd0]

None of the CI failures were caused by this PR. I believe they should be fixed, but I don't believe this PR should be blocked on it.