[conda] Standardize conda recipe

According to https://www.idiap.ch/software/bob/docs/bob/bob.devtools/master/templates.html#conda-recipe which was updated in bob/bob.devtools!185 (merged)

Please provide a reference (issue, doc, mail, etc.) in the commit message so we can know where that standardisation comes from.

changed the description

done.

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• 0aa5b9c8 - [conda] Standardize conda recipe

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mentioned in commit 1e8e9f1a