fix numerous typos of occurred #1109

Job	Run time
Rustfmt	17s
Clippy	57s
Build docs	1m 22s
Test (MSRV)	1m 17s
Test (stable)	2m 1s
Test (beta)	2m 5s
Test (nightly)	1m 50s
Test (macOS)	2m 19s
Test (Windows)	5m 27s
Test (no features)	1m 12s
Test (all features - simdjson, cargo test --all-features --lib --tests --examples)	1m 11s
Test (native TLS, cargo test --all-features --features serenity/native_tls_backend --lib --tests ...	1m 14s
	21m 12s

Provide feedback