Replace a link: with an xref:

Trying it out to see if it fixes a new issue noticed on erlang.mk.

doc/src/guide/app.asciidoc

@@ -6,7 +6,7 @@ foremost, a build tool. In this chapter we will cover
 the basics of building a project with Erlang.mk.
 
 For most of this chapter, we will assume that you are
-using a project link:getting_started.asciidoc[generated by Erlang.mk].
+using a project xref:getting_started[generated by Erlang.mk].
 
 === How to build