chore: update S3 docs on region #3424

Job	Run time
check_features (azure)	56s
check_features (gcs)	55s
check_features (gha)	1m 5s
check_features (memcached)	55s
build sccache x86_64-unknown-linux-musl	5m 42s
build sccache-dist x86_64-unknown-linux-musl	4m 24s
check_features (redis)	54s
build sccache aarch64-unknown-linux-musl	6m 6s
check_features (s3)	1m 4s
build sccache armv7-unknown-linux-musleabi	6m 11s
check_features (webdav)	1m 5s
build sccache i686-unknown-linux-musl	6m 19s
build sccache x86_64-apple-darwin	14m 14s
build sccache aarch64-apple-darwin	4m 57s
coverage ubuntu-20.04 rust nightly	4m 54s
build sccache x86_64-pc-windows-msvc	15m 18s
coverage macOS-11 rust nightly	10m 49s
clippy ubuntu-latest	1m 26s
clippy macOS-latest	2m 38s
clippy windows-latest	2m 26s
test ubuntu-20.04 rust 1.70.0	3m 18s
rustfmt ubuntu-latest	11s
test ubuntu-22.04 rust 1.70.0 dist-server	3m 32s
test ubuntu-20.04 rust stable	2m 32s
test ubuntu-20.04 rust beta	2m 51s
test freebsd-13.2 rust stable (ubuntu-22.04)	9m 8s
test ubuntu-20.04 rust nightly	2m 49s
test ubuntu-22.04 rust stable	2m 44s
test macOS-11 rust stable	5m 3s
toml_format	12s
test macos-14 rust stable	2m 31s
test windows-2019 rust 1.70.0	4m 46s
test windows-2019 rust nightly	4m 51s
test windows-2019 rust beta	4m 29s
release	0s
	2h 21m 15s

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