Persian translation mislabeled

I was rather disappointed, on seeing "Pirate" in the list of supported languages, to not see phrases like _"Puts ye in control t' preserve yerr perrivacy!"_* It looks like it is actually the **Persian** translation.

See https://translate.riot.im/projects/riot-ios/riot-ios/pr/

Might still be a fun way to celebrate [19th of September](https://en.wikipedia.org/wiki/International_Talk_Like_a_Pirate_Day). _Aarrr!_ :pirate_flag:

Start by checking the Riot iOS supported-language list and the linked Riot iOS translation project. Verify which entry contains the Pirate wording and correct its language label to match the Persian translation, then confirm the supported-language list displays the corrected name.

Written by the indexing model from the issue text.