compiler: change "bare function" doc-comments too

Co-authored-by: León Orell Valerian Liehr <[email protected]>

Author: workingjubilee

compiler/rustc_ast/src/ast.rs

@@ -2455,7 +2455,7 @@ pub enum TyKind {
     ///
     /// Desugars into `Pin<&'a T>` or `Pin<&'a mut T>`.
     PinnedRef(Option<Lifetime>, MutTy),
-    /// A bare function (e.g., `fn(usize) -> bool`).
+    /// A function pointer type (e.g., `fn(usize) -> bool`).
     FnPtr(P<FnPtrTy>),
     /// An unsafe existential lifetime binder (e.g., `unsafe<'a> &'a ()`).
     UnsafeBinder(P<UnsafeBinderTy>),

compiler/rustc_hir/src/hir.rs

@@ -3645,7 +3645,7 @@ pub enum TyKind<'hir, Unambig = ()> {
     Ptr(MutTy<'hir>),
     /// A reference (i.e., `&'a T` or `&'a mut T`).
     Ref(&'hir Lifetime, MutTy<'hir>),
-    /// A bare function (e.g., `fn(usize) -> bool`).
+    /// A function pointer (e.g., `fn(usize) -> bool`).
     FnPtr(&'hir FnPtrTy<'hir>),
     /// An unsafe binder type (e.g. `unsafe<'a> Foo<'a>`).
     UnsafeBinder(&'hir UnsafeBinderTy<'hir>),