Document that Docutils supports the Valentian varriety of Catalan.
Actually, all translations used in "ca.py" work in both, "Catalan" and "Catalan (Valencian)" and with the tags "ca" as well as "ca-valencia".
Currently, "Catalan (Valencian)" is no official trove tag.
Authored by: milde 2023-10-02
Parent: [r9456]
Child: [r9458]