API GetMerchantItemLink

__NOTOC__
Returns the item link for a merchant item.
 link = GetMerchantItemLink(index)
==Arguments==
:;index: - The index of the item in the merchant's inventory
==Returns==
:;itemLink: - returns a string that will show as a clickable link to the item
==Example==
Show item link will appear in the default chat frame.
 DEFAULT_CHAT_FRAME:AddMessage(GetMerchantItemLink(4));