ISO typo

Author: ManHatos

docs/resources/Poll.md

@@ -20,7 +20,7 @@ necessary.
 |-------------------|-----------------------------------------------------------------------------------------------------|-----------------------------------------------------------------|
 | question          | [Poll Media Object](#DOCS_RESOURCES_POLL/poll-media-object-poll-media-object-structure)             | The question of the poll. Only `text` is supported.             |
 | answers           | List of [Poll Answer Objects](#DOCS_RESOURCES_POLL/poll-answer-object-poll-answer-object-structure) | Each of the answers available in the poll.                      |
-| expiry            | ?IS08601 timestamp                                                                                  | The time when the poll ends.                                    |
+| expiry            | ?ISO8601 timestamp                                                                                  | The time when the poll ends.                                    |
 | allow_multiselect | boolean                                                                                             | Whether a user can select multiple answers                      |
 | layout_type       | integer                                                                                             | The [layout type](#DOCS_RESOURCES_POLL/layout-type) of the poll |
 | results?          | [Poll Results Object](#DOCS_RESOURCES_POLL/poll-results-object-poll-results-object-structure)       | The results of the poll                                         |