fix(docs): add missing commands and permissions to command-permissions.mdx

Author: NonSwag

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

@@ -8,6 +8,9 @@ description: A list of all world commands and their required permissions.
 | Command                  | Permission                          |
 | ------------------------ | ----------------------------------- |
 | /seed                    | worlds.command.seed                 |
+| /save-all                | worlds.command.save-all             |
+| /save-off                | worlds.command.save-off             |
+| /save-on                 | worlds.command.save-on              |
 | /world backup            | worlds.command.backup               |
 | /world clone             | worlds.command.clone                |
 | /world create            | worlds.command.create               |