build

docs: mention "jj file untrack" in Git compatibility list #183

Job	Run time
Check protos	33s
build (ubuntu-latest)	2m 36s
Build jj-lib without Git support	48s
build (macos-13)	2m 41s
cargo-deny (advisories)	39s
Clippy check	2m 37s
build (macos-14)	2m 42s
cargo-deny (bans licenses sources)	44s
build (windows-latest)	2m 25s
build (ubuntu-latest, --all-features)	2m 41s
Check that MkDocs can build the docs	12s
Check formatting	19s
Check that MkDocs can build the docs with latest Python and uv	13s
	19m 10s

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