The Atlassian Community can help you and your team get more value out of Atlassian products and practices.
JIRA Software 8.5 Document points to JIRA Softwae 7.13.
I am sure nothing much have changed in terms of documentation between 7.13 and 8.5 - but it seems confusing and misguiding users on internet.
Thanks for letting us know about this. This specific document didn't change much from Jira 7.13, so our brilliant Confluence just inherited most of its content from 7.13, hence the wrong links. I fixed the URLs so they link within the same version.
Jira docs people