Missing documentation for embeds with poll_result type

[DA-344]

Description

Currently, the Discord API Docs are missing the poll_result embed types and fields (poll_question_text, victor_answer_text, total_votes, etc.).

Steps to Reproduce

• Create a poll (any duration)
• Wait for the poll to end
• There is a new message that says "The poll <poll title> has closed", and apparently is an embed with the poll_result type.

Expected Behavior

This embed type to be documented

Current Behavior

It is not documented

Screenshots/Videos

Client and System Information

stable 309513 (4058dd9)