Rollup merge of #80881 - jyn514:intra-doc-self, r=GuillaumeGomez

Fix intra-doc links to `Self` and `crate`

Closes https://github.com/rust-lang/rust/issues/77732.

src/test/rustdoc/intra-doc-crate/auxiliary/self.rs

@@ -1,4 +1,7 @@
 #![crate_name = "cross_crate_self"]
+
+/// Link to [Self]
+/// Link to [crate]
 pub struct S;
 
 impl S {

src/test/rustdoc/intra-doc-crate/self.rs

@@ -1,6 +1,9 @@
 // aux-build:self.rs
+// build-aux-docs
 
 extern crate cross_crate_self;
 
 // @has self/struct.S.html '//a[@href="../self/struct.S.html#method.f"]' "Self::f"
+// @has self/struct.S.html '//a[@href="../self/struct.S.html"]' "Self"
+// @has self/struct.S.html '//a[@href="../cross_crate_self/index.html"]' "crate"
 pub use cross_crate_self::S;