Add some intra-doc links to compiler docs

compiler/rustc_interface/src/interface.rs

@@ -25,8 +25,9 @@ use std::sync::{Arc, Mutex};
 pub type Result<T> = result::Result<T, ErrorReported>;
 
 /// Represents a compiler session.
+///
 /// Can be used to run `rustc_interface` queries.
-/// Created by passing `Config` to `run_compiler`.
+/// Created by passing [`Config`] to [`run_compiler`].
 pub struct Compiler {
     pub(crate) sess: Lrc<Session>,
     codegen_backend: Lrc<Box<dyn CodegenBackend>>,

compiler/rustc_interface/src/passes.rs

@@ -95,7 +95,7 @@ declare_box_region_type!(
 /// harness if one is to be provided, injection of a dependency on the
 /// standard library and prelude, and name resolution.
 ///
-/// Returns `None` if we're aborting after handling -W help.
+/// Returns [`None`] if we're aborting after handling -W help.
 pub fn configure_and_expand(
     sess: Lrc<Session>,
     lint_store: Lrc<LintStore>,

compiler/rustc_interface/src/queries.rs

@@ -23,7 +23,11 @@ use std::cell::{Ref, RefCell, RefMut};
 use std::rc::Rc;
 
 /// Represent the result of a query.
-/// This result can be stolen with the `take` method and generated with the `compute` method.
+///
+/// This result can be stolen with the [`take`] method and generated with the [`compute`] method.
+///
+/// [`take`]: Self::take
+/// [`compute`]: Self::compute
 pub struct Query<T> {
     result: RefCell<Option<Result<T>>>,
 }