Fixed strange comma causing syntax error and breaking flow

I was messing with the bulk generator and noticed that no keys were being generated.

The JS console gave me a syntax error due to a strange comma being used in the "zh-cn" translation commit.

```
Uncaught SyntaxError: Unexpected token ILLEGAL        (index):5484
```

I'm not sure why but it looks like a different comma that JS doesn't parse properly and so it causes a syntax error.

Changing it to an "english" comma fixes the issue and the bulk generator works fine.