Update pt-PT.json5

[rsaraivac]

Addition of missing pt_PT translation keys, improvements and minor revisions to existing translations.

References

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• Fixes #issue-number (if this fixes an issue ticket)
• Requires DSpace/DSpace#pr-number (if a REST API PR is required to test this)

Description

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• Second, ...

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[github-actions]

Hi @rsaraivac,
Conflicts have been detected against the base branch.
Please resolve these conflicts as soon as you can. Thanks!

[github-actions]

Hi @rsaraivac,
Conflicts have been detected against the base branch.
Please resolve these conflicts as soon as you can. Thanks!

[github-actions]

Hi @rsaraivac,
Conflicts have been detected against the base branch.
Please resolve these conflicts as soon as you can. Thanks!

[tdonohue]

@paulo-graca : Would you be interested in reviewing this translation?

[github-actions]

Hi @rsaraivac,
Conflicts have been detected against the base branch.
Please resolve these conflicts as soon as you can. Thanks!

[tdonohue]

👍 Thanks @rsaraivac ! I gave this a quick test and verified some of the translations via Google Translate. Looks good to me, and I appreciate all the new translations you've added.