Hello,
The probleme
Steps to Reproduce:

• Go to: https://incubator.wikimedia.org/w/index.php?title=Special:Translate&language=zgh&group=page-Help%3AFAQ
• Try to select ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ from languages list.

Actual Results:
Wikimedia pages can not be translated into Standard Moroccan Tamazight language, as it can not be selected from the list of languages. When the cursor is positioned over, a small tooltip appears indicating that the language is "Undefined".

Expected cause:
The file that contains the list of ISO codes for supported languages is Outdated and does not include the ISO code for Standard Moroccan Tamazight language.
Check: tools.wmflabs.org
Outdated File: https://tools.wmflabs.org/robin/codelookup/iso-639-3_20120228.tab

The proposed solution:
Update the file by adding the Amazigh language ISO code or just replacing it with this updated one.
Updated File: http://www-01.sil.org/iso639-3/iso-639-3_20130123.tab

Additional Information About the Language:

• https://en.wikipedia.org/wiki/Standard_Moroccan_Berber
• http://www-01.sil.org/iso639-3/documentation.asp?id=zgh
• https://www.ethnologue.com/language/zgh

Thanks.