Add PT-BR automatic translation maintenance_curation.Rmd (#773)

* add translation

* Review for Portuguese translation of `maintenance_curation.pt.Rmd` (#815)

* Review until line 84

* Finish review

* Update maintenance_curation.pt.Rmd

Co-authored-by: Rafael Fontenelle <[email protected]>

* Update maintenance_curation.pt.Rmd

Co-authored-by: Rafael Fontenelle <[email protected]>

* Update maintenance_curation.pt.Rmd

Co-authored-by: Rafael Fontenelle <[email protected]>

* Update maintenance_curation.pt.Rmd

Co-authored-by: Rafael Fontenelle <[email protected]>

* Update maintenance_curation.pt.Rmd

Co-authored-by: Rafael Fontenelle <[email protected]>

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Co-authored-by: Rafael Fontenelle <[email protected]>
Co-authored-by: Yanina Bellini Saibene <[email protected]>

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Co-authored-by: Maëlle Salmon <[email protected]>
Co-authored-by: Pedro Faria <[email protected]>
Co-authored-by: Rafael Fontenelle <[email protected]>