Fix documentation link issues

cranelift/codegen/meta/src/cdsl/ast.rs

@@ -390,10 +390,12 @@ impl VarPool {
     }
 }
 
-/// Contains constants created in the AST that must be inserted into the true [ConstantPool]
-/// (cranelift_codegen::ir::ConstantPool) when the legalizer code is generated. The constant data
-/// is named in the order it is inserted; inserting data using [insert]
-/// (cranelift_codegen_meta::cdsl::ast::insert) will avoid duplicates.
+/// Contains constants created in the AST that must be inserted into the true [ConstantPool] when
+/// the legalizer code is generated. The constant data is named in the order it is inserted;
+/// inserting data using [insert] will avoid duplicates.
+///
+/// [ConstantPool]: ../../../cranelift_codegen/ir/constant/struct.ConstantPool.html
+/// [insert]: ConstPool::insert
 pub(crate) struct ConstPool {
     pool: Vec<Vec<u8>>,
 }

cranelift/codegen/src/ir/constant.rs

@@ -21,8 +21,9 @@ use cranelift_entity::EntityRef;
 
 /// This type describes the actual constant data. Note that the bytes stored in this structure are
 /// expected to be in little-endian order; this is due to ease-of-use when interacting with
-/// WebAssembly values, which are [little-endian by design]
-/// (https://github.com/WebAssembly/design/blob/master/Portability.md).
+/// WebAssembly values, which are [little-endian by design].
+///
+/// [little-endian by design]: https://github.com/WebAssembly/design/blob/master/Portability.md
 #[derive(Clone, Hash, Eq, PartialEq, Debug, Default)]
 pub struct ConstantData(Vec<u8>);
 
@@ -116,8 +117,7 @@ impl fmt::Display for ConstantData {
 impl FromStr for ConstantData {
     type Err = &'static str;
 
-    /// Parse a hexadecimal string to `ConstantData`. This is the inverse of [ConstantData::fmt]
-    /// (cranelift_codegen::ir::ConstantData::fmt).
+    /// Parse a hexadecimal string to `ConstantData`. This is the inverse of `Display::fmt`.
     ///
     /// ```
     /// use cranelift_codegen::ir::ConstantData;