Problem correcting a date

IWA Mid-South Something to Prove was held on June 11, 2005.   This was a direct-to-video release, not a TV/online special.   The page lists June 11, 2005 as the release date of the DVD.   This is incorrect.   The page for the DVD by Smart Mark Video only lists the date of the event not the date of the DVD's release.  How do I fix the page so it won't say it was released on June 11th?   Thank you.

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