[Repo Assist] Fix docs: switch to fsdocs-tool 21.0.0 to resolve namespace substitution (fixes #269)#270

dsyme merged 2 commits intomainfsprojects/FSharp.Control.AsyncSeq:mainfrom

repo-assist/fix-issue-269-fsdocs-namespaces-997c8ff770dbbe20fsprojects/FSharp.Control.AsyncSeq:repo-assist/fix-issue-269-fsdocs-namespaces-997c8ff770dbbe20Copy head branch name to clipboard