Link only answers are answers that are barely more than a link to another page.
Answers that depend entirely on the information available on another page.
"do as described here"
In order to be immediately helpful to readers (and avoid link-rot), we prefer an answer that provides at least a summary of the solution directly, with links used to offer additional information.
Answers that do not fundamentally answer the question may be removed. This includes answers that are … barely more than a link to an external site
Provide context for links
A link to a potential solution is always welcome, but please add context around the link so your fellow users will have some idea what it is and why it’s there. Always quote the most relevant part of an important link, in case the external resource is unreachable or goes permanently offline.
links... should never be the only piece of information in your answer.
An analogy would be if you are standing at 100 Main St. and you ask where 98 Main St. is. A good answer would be
"It is the next building over". points at building
If you instead include a link, you are saying
"I'll direct you to a tourism information booth, and they will be able to provide you with your answer and much more!"
Which is great, however, you haven't answered their question at all, you've deferred the answering to somewhere else...