(📚) fix docs for `invalid-X-returns` #27498

Job	Run time
Determine changes	9s
pre-commit	40s
mkdocs	2m 29s
cargo fmt	18s
python package	1m 28s
cargo clippy	1m 37s
cargo test (linux)	2m 59s
cargo fuzz	4m 35s
benchmarks	6m 56s
cargo test (wasm)	1m 14s
cargo test (windows)	8m 5s
cargo udeps	1m 56s
formatter instabilities and black similarity	0s
test scripts	56s
ecosystem	8m 3s
test ruff-lsp	14s
	41m 39s

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