Fix typo in SendBody comment #2867

Job	Run time
build_versions (stable)	8s
Test	1m 0s
build_versions (beta)	14s
Test	43s
Test (charset)	56s
build_versions (1.71.1)	14s
Test (charset)	46s
Test (cookies)	1m 17s
cargo-deny (aarch64-apple-ios)	23s
Test (cookies)	56s
cargo-deny (aarch64-linux-android)	22s
Test (socks-proxy)	54s
Test (socks-proxy)	48s
Docs	1m 39s
cargo-deny (i686-pc-windows-gnu)	29s
Test (gzip)	55s
Test (gzip)	44s
cargo-deny (i686-pc-windows-msvc)	24s
Test (brotli)	54s
Test (brotli)	41s
cargo-deny (i686-unknown-linux-gnu)	21s
Test (json)	1m 19s
Test (json)	43s
Lint	42s
cargo-deny (wasm32-unknown-unknown)	22s
Test (native-tls)	1m 8s
Test (native-tls)	58s
cargo-deny (x86_64-apple-darwin)	23s
Test (rustls-no-provider)	50s
cargo-deny (x86_64-apple-ios)	21s
cargo-deny (x86_64-pc-windows-gnu)	22s
cargo-deny (x86_64-pc-windows-msvc)	20s
cargo-deny (x86_64-unknown-linux-gnu)	20s
cargo-deny (x86_64-unknown-redox)	21s
	22m 57s

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