`docs`: remove `.` from check and format commands #25708

Job	Run time
cargo fmt	15s
pre-commit	41s
Determine changes	8s
mkdocs	2m 2s
python package	1m 11s
cargo clippy	0s
cargo test (windows)	0s
cargo test (linux)	0s
cargo test (wasm)	0s
cargo udeps	0s
cargo fuzz	0s
formatter instabilities and black similarity	0s
test scripts	0s
benchmarks	0s
ecosystem	0s
test ruff-lsp	0s
	4m 17s

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