Make callout for best practices of progressCallback with "resumable: true" flag (v5)

**Describe the content issue**:
A clear and concise description of what the content issue is. Is there content missing or is there incorrect content?

Related Issue [#11863](https://github.com/aws-amplify/amplify-js/issues/11863) on JS repo.

**URL page where content issue is**:
https://docs.amplify.aws/lib/storage/upload/q/platform/js/#pause-and-resume-uploads