Thanks for flagging! Did you raise a GitHub bug report for this issue? Normally I would suggest either yourself or I could raise a PR to fix the documentation, but this looks to have been broken for some time and I'm not sure it's as stratightforward as correcting the link.
No worries, I've raised it here. Feel free to add any additional comments to the discussion. We appreciate any feedback on what kind of documentation would be helpful for plugin development.
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