chore: fix typo in front page #816

Job	Run time
cargo-machete	5s
cargo-doc (ubuntu)	37s
cargo-fmt	21s
cargo-doc (windows)	3m 18s
cargo-lock	8s
cargo-doc (macos)	47s
cargo-miri	2m 4s
compilation-benchmarks	2m 16s
prettier	7s
runtime-benchmarks (args_3)	1m 1s
taplo-fmt	6s
runtime-benchmarks (args_5)	1m 6s
test-msrv (ubuntu)	2m 47s
test-stable (ubuntu)	1m 59s
runtime-benchmarks (args_10_alloc)	1m 3s
test-msrv (windows)	3m 42s
test-stable (windows)	5m 2s
runtime-benchmarks (args_10_structs)	1m 19s
test-msrv (macos)	3m 5s
test-unstable (beta)	49s
test-stable (macos)	2m 31s
runtime-benchmarks (args_10)	1m 18s
test-unstable (nightly)	29s
runtime-benchmarks (args_20)	1m 3s
typos	4s
version-sync	5s
website-build	30s
	37m 42s

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