The translator credits string.
It will be displayed on the Credits page.
This string should be `"translator-credits"` or `"translator_credits"` and should be marked as translatable.
The string may contain email addresses and URLs, see the introduction for more details.
See also:
* [property@AboutDialog:developers] * [property@AboutDialog:designers] * [property@AboutDialog:artists] * [ property@AboutDialog:documenters] * [method@AboutDialog.add_credit_section] * [method@AboutDialog.add_acknowledgement_section]