doc: correct the link to "Lean Together 2021: Metaprogramming in Lean 4 continued"

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gabriel-doriath-dohler 2022-01-01 15:23:08 +01:00 committed by Leonardo de Moura
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@ -24,7 +24,7 @@ both programmers and proof engineers alike.
TODO. See [Lean Together 2021: Metaprogramming in Lean
4](https://youtu.be/hxQ1vvhYN_U) for an overview as well [the
continuation](https://youtu.be/hxQ1vvhYN_U) about tactic programming.
continuation](https://youtu.be/vy4JWIiiXSY) about tactic programming.
For more information on antiquotations, see also §4.1 of [Beyond
Notations: Hygienic Macro Expansion for Theorem Proving
Languages](https://arxiv.org/pdf/2001.10490.pdf#page=11).