mathlib

224e0f88 - docs(tactic/interactive): Add tag `debugging` and doc `mwe` for `extract_goal` (#3708)

docs(tactic/interactive): Add tag `debugging` and doc `mwe` for `extract_goal` (#3708) Requested by @kbuzzard on [Zulip](https://leanprover.zulipchat.com/#narrow/stream/113488-general/topic/Being.20stuck.20-.3E.20MWE/near/206124861). x-ref: leanprover-community/leanprover-community.github.io#105 Co-authored-by: Rob Lewis <Rob.y.lewis@gmail.com>