A file has contracted a case of bad language code upon use of SVG Translate Tool. The revision in question is https://upload.wikimedia.org/wikipedia/commons/archive/d/dc/20201231085805!Research_design_and_evidence_-_Capho.svg which has systemLanguage="zh_HANS" (with an underscore); it works after being changed to https://upload.wikimedia.org/wikipedia/commons/d/dc/Research_design_and_evidence_-_Capho.svg which has systemLanguage="zh-Hans" (with a hyphen).
To reproduce, just choose 中文(简体)as the target language. Typing "zh" in the search box helps.
The language code should be normalized to all lowercase and with a hyphen separator, regardless of what format is already in the file.
Acceptance criteria:
- No file being output from the tool should be able to have a systemLanguage attribute in the wrong format.