docs: fix dead Click documentation link in README - #1626
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…letsprojects.com) click.pocoo.org now returns HTTP 400, while siblings (babel/lucumr) still resolve, so the subdomain is dead. Click is a Pallets project; its docs moved to https://click.palletsprojects.com/.
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Aug 29, 2026
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What
README.rstlinks to Click's documentation viahttps://click.pocoo.org/, which now returns HTTP 400 (Bad Request) from nginx. (Sibling Pocoo subdomains such asbabel.pocoo.orgstill resolve, so the outage is specific to this doc subdomain.)Click is a Pallets project and its docs now live at https://click.palletsprojects.com/ (verified returning HTTP 200). This PR updates the single reference.
Verification
curl -I https://click.pocoo.org/→HTTP/1.1 400 Bad Requestcurl -I https://click.palletsprojects.com/→HTTP/1.1 200 OKChange
README.rst:355:https://click.pocoo.org/→https://click.palletsprojects.com/One-line doc-only change, no code/test impact.
This contribution was prepared with the assistance of an AI agent (Hermes), used as a tool under CAOShurong's direction. The link-deadness verification above was performed independently.