If you would like, you can submit a correction for the word when you are studying it, and it will be reviewed and fixed shortly. Or if you don't mind, you could post the word and correct pinyin here, and someone will fix the entry.

I thought 合同 was always he2tong5, with the last character being neutral. Not sure if it changes or not in this instance. Actually I've seen it listed in phrases both ways, perhaps scholarly wisdom can be applied.