Fix warning admonition

Closes #138 (closed)

Fixes the warning under https://teklia.gitlab.io/atr/dan/usage/train/parameters/#dataset-parameters

changed milestone to %ML Prod - Summer 2023

added P3 + 1 deleted label

requested review from @melodie.boillet

assigned to @schneider-y

added 2 commits

• 803610d3 - 1 commit from branch main
• 5a958540 - fix warning admonition

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merged