Fix rustdoc warnings in Rust 1.73 (#978)

Author: qinsoon

src/plan/mod.rs

@@ -2,12 +2,12 @@
 //!
 //! This module provides various GC plans, each of which implements a GC algorithm.
 //! Generally a plan consists of a few parts:
-//! * A plan type that implements the [`Plan`](crate::plan::Plan) trait, which defines
+//! * A plan type that implements the [`Plan`] trait, which defines
 //!   spaces used in the plan, and their behaviors in GC and page accounting.
 //! * A mutator definition, which describes the mapping between allocators and allocation semantics,
 //!   and the mapping between allocators and spaces. If the plan needs barrier, the barrier definition is
 //!   also included here.
-//! * A constant for [`PlanConstraints`](crate::plan::PlanConstraints), which defines
+//! * A constant for [`PlanConstraints`], which defines
 //!   plan-specific constants.
 //! * Plan-specific [`GCWork`](crate::scheduler::GCWork), which is scheduled during GC.
 //!

src/util/alloc/allocators.rs

@@ -190,7 +190,7 @@ pub enum AllocatorSelector {
 }
 
 /// This type describes allocator information. It is used to
-/// generate fast paths for the GC. All offset fields are relative to [`Mutator`](crate::Mutator).
+/// generate fast paths for the GC. All offset fields are relative to [`Mutator`].
 #[repr(C, u8)]
 #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, Default)]
 pub enum AllocatorInfo {