wget with multiple URLs at once

• https://download.suse.com/dl_manager_inst.html
• https://www.gnu.org/software/wget/manual/wget.html

According to the suse “download manager help” you can use “–output-document=file” as “–output-document FILENAME.xxx”, which suggests, that each file gets its own suffix. That is untrue. All files downloaded will only get concatenated into that single output document.