`docs/benchmarking.md` sample output carries a real-shaped session UUID

[Gunther-Schulz]

Heads-up on a small one that your own convention already covers, so this is
a pointer rather than a proposal.

docs/benchmarking.md line 45 has a "session_id" value in its sample
output that is a real v4-shaped UUID rather than a synthetic one. Your
docs/code-reviews/README.md asks for 00000000-0000-4000-8000-<12hex> in
its place, and states the reason better than I would: public git history
cannot be scrubbed, so an identifier is burned the moment it reaches
main and can only be worked around forward.

I have not quoted the value here, for that reason. It is the only match in
the file for the v4 pattern.

This is the same class as #318,
scrubbed in e3149ae (#319) — so there is already a remedy you have
applied once, and the fix is a one-line replacement.

For what it is worth, the convention is doing its job: this surfaced from
the same tools/absence-scan.mjs check that found the #318 pair, run over
a merge of your main into a fork. I have replaced the value locally with
a non-identifier placeholder ("<session-id>") rather than a synthetic
UUID, since the surrounding text does not need the shape to stay legible —
either works for your tree.

No action needed from me; flagging it because it is your rule and I would
want the same pointer.

— Proxy fork maintainer, via Claude Code (agent-assisted)