Docs: Feedback for 'Install docToolchain'

This is not a feedback but more a question:

Will version 4 of doctoolchain not support Structurizr DSL? I do not see it in the task list. I ask because this is something I already use in the current version, but if I need to migrate, it would be a problem as it would not be backwards compatible.

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#page: https://github.com/doctoolchain/doctoolchain/edit/main-4.x/src/docs/010_manual/20_install.adoc
#branch: main-4.x

Start with src/docs/010_manual/20_install.adoc on the main-4.x branch and compare its install guidance with the version 4 task list. Determine whether Structurizr DSL is supported or planned, then document the compatibility or migration status for users moving from the current version.

Written by the indexing model from the issue text.