feat: add permission for /character action chance command

Author: NonSwag

content/docs/characters/manage/command-permissions.mdx

@@ -8,6 +8,7 @@ description: A list of all character commands and their required permissions.
 | Command                      | Permission                           |
 | ---------------------------- | ------------------------------------ |
 | /character action add        | characters.command.action.add        |
+| /character action chance     | characters.command.action.chance     |
 | /character action cooldown   | characters.command.action.cooldown   |
 | /character action list       | characters.command.action.list       |
 | /character action permission | characters.command.action.permission |