Those lines look like Markdown ‘link’ entries, but the URL portion of each of them (in the round brackets) looks invalid, as it begins with a ‘protocol’ of ‘upload’ - which I am sure will not be recognised by any browser. The URL should [almost certainly] use either HTTP or HTTPS and should include a ‘host’ element, pointing at an S3 service endpoint that can provide content from the corresponding bucket - something like yourBucketName.s3.yourRegion.amazonaws.com.
You should be able to generate or discover a ‘correct’ URL (when an S3 bucket is used) from the upload image browser, and you should get a valid image reference when you use the Strapi rich text editor to embed an image from the media collection. If your media files are being shown in the media browser or Strapi rich text editor with a URL like the ones shown in your question, then the root problem is likely to be that you have not configured the AWS S3 ‘provider’ correctly. It almost certainly lacks a valid ‘endpoint’ configuration parameter in the ‘providerOptions’ object … See Configuration section here and follow the link to ‘Complete list of options’.
Note, too, that the Markdown syntax for an embedded image also requires a leading exclamation mark (!), otherwise it’s likely to be rendered as a plain hyperlink.