docs: fix getTemporarySecurityCredentials in aws-s3 (#5363)

docs/uploader/aws-s3-multipart.mdx

@@ -420,9 +420,6 @@ upload as query parameters.
 - Set it to `['name']` to only send the `name` field.
 - Set it to `true` (the default) to send _all_ metadata fields.
 
-<details>
-<summary>Deprecated options</summary>
-
 #### `getTemporarySecurityCredentials(options)`
 
 :::note
@@ -484,8 +481,6 @@ uppy.use(AwsS3, {
 });
 ```
 
-</details>
-
 [`gettemporarysecuritycredentials`]: #gettemporarysecuritycredentialsoptions
 [`shouldusemultipart`]: #shouldusemultipartfile
 [companion docs]: /docs/companion