chore: fix link to README.md #1540

Job	Run time
cargo-deny	18s
Fuzz targets (cargo-fuzz)	47s
build_benchmarks	43s
Fuzz targets (afl)	2m 6s
cargo-semver-checks	26s
clippy	2m 2s
public_private_dependencies	22s
rustfmt	4s
test_avif_decoding	1m 17s
test_features	29s
test_other_archs (powerpc-unknown-linux-gnu)	2m 39s
test_features (default)	1m 43s
test_toolchains (1.67.1)	33s
test_other_archs (i686-unknown-linux-gnu)	1m 40s
test_features (rayon)	28s
test_toolchains (nightly)	1m 43s
test_features (avif)	54s
test_toolchains (beta)	1m 59s
test_features (bmp)	25s
test_features (dds)	24s
test_features (exr)	43s
test_features (ff)	25s
test_features (gif)	28s
test_features (hdr)	27s
test_features (ico)	38s
test_features (jpeg)	32s
test_features (png)	40s
test_features (pnm)	36s
test_features (qoi)	25s
test_features (tga)	31s
test_features (tiff)	33s
test_features (webp)	29s
	27m 29s

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