fix(Guild): mark guild_scheduled_events field as optional

Author: iShibi

docs/resources/Guild.md

@@ -58,7 +58,7 @@ Guilds in Discord represent an isolated collection of users and channels, and ar
 | nsfw_level                    | integer                                                                                                      | [guild NSFW level](#DOCS_RESOURCES_GUILD/guild-object-guild-nsfw-level)                                                                     |
 | stage_instances? \*           | array of [stage instance](#DOCS_RESOURCES_STAGE_INSTANCE/stage-instance-object) objects                      | Stage instances in the guild                                                                                                                |
 | stickers?                     | array of [sticker](#DOCS_RESOURCES_STICKER/sticker-object) objects                                           | custom guild stickers                                                                                                                       |
-| guild_scheduled_events \*     | array of [guild scheduled event](#DOCS_RESOURCES_GUILD_SCHEDULED_EVENT/guild-scheduled-event-object) objects | the scheduled events in the guild                                                                                                           |
+| guild_scheduled_events? \*     | array of [guild scheduled event](#DOCS_RESOURCES_GUILD_SCHEDULED_EVENT/guild-scheduled-event-object) objects | the scheduled events in the guild                                                                                                           |
 
 ** \* These fields are only sent within the [GUILD_CREATE](#DOCS_TOPICS_GATEWAY/guild-create) event **