Fix documentation for the `file-stream` response #5153

Job	Run time
check	1m 42s
cargo-hack	5m 26s
cargo-public-api-crates (axum)	48s
check-docs	21s
cargo-public-api-crates (axum-core)	38s
cargo-public-api-crates (axum-extra)	49s
cargo-deny check (advisories)	23s
dependencies-are-sorted	15s
Spell Check with Typos	5s
cargo-public-api-crates (axum-macros)	36s
cargo-deny check (bans licenses sources)	26s
test-msrv	2m 27s
test-nightly	1m 36s
armv5te-unknown-linux-musleabi	54s
test-docs	1m 35s
test-versions (stable)	2m 57s
wasm32-unknown-unknown	16s
test-versions (beta)	2m 46s
	24m 0s

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