build

docs: add customization example of color-words diff style #12226

Job	Run time
build (ubuntu-latest)	4m 11s
Build jj-lib without Git support	42s
build (macos-14)	3m 4s
cargo-deny (advisories)	23s
build (windows-latest)	8m 58s
Check protos	26s
cargo-deny (bans licenses sources)	21s
Clippy check	2m 23s
build (ubuntu-latest, --all-features)	5m 1s
Check that MkDocs can build the docs	20s
Check that MkDocs can build the docs with Poetry 1.8	27s
Check formatting	14s
	26m 30s

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