From Halopedia, the Halo wiki
Yes. If you perhaps see a grammatical/spelling, or any other type of error on a page, you are free to correct it. If you are unsure about an edit, feel free to ask any of our administrators (myself included) for assistance.
No problem. Welcome to Halopedia! :)
The information you added to the articles was already previously mentioned on the page. As such, it was redundant to have the info mentioned on the page twice. Hope you uderstand. Regards.