Explain multiple concurrent tool calls

SHA: f7d5823
Reason: push, by domenic

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: domenic

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    <p id="w3c-state"><a href="https://www.w3.org/standards/types/#CG-DRAFT">Draft Community Group Report</a>,
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