Auto merge of rust-lang#9083 - giraffate:fix_link_in_changelog, r=flip1995

Fix some links

changelog: none

Author: bors

CHANGELOG.md

@@ -1,7 +1,7 @@
 # Changelog
 
 All notable changes to this project will be documented in this file.
-See [Changelog Update](doc/changelog_update.md) if you want to update this
+See [Changelog Update](book/src/development/infrastructure/changelog_update.md) if you want to update this
 document.
 
 ## Unreleased / In Rust Nightly
@@ -1577,7 +1577,7 @@ Released 2021-03-25
 * Add `cargo dev-lintcheck` tool to the Clippy Dev Tool
   [#6469](https://github.com/rust-lang/rust-clippy/pull/6469)
 
-[Roadmap]: https://github.com/rust-lang/rust-clippy/blob/master/doc/roadmap-2021.md
+[Roadmap]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/proposals/roadmap-2021.md
 [Roadmap project page]: https://github.com/rust-lang/rust-clippy/projects/3
 
 ## Rust 1.50
@@ -3426,7 +3426,7 @@ Released 2018-09-13
 [`AsRef`]: https://doc.rust-lang.org/std/convert/trait.AsRef.html
 [configuration file]: ./rust-clippy#configuration
 [pull3665]: https://github.com/rust-lang/rust-clippy/pull/3665
-[adding_lints]: https://github.com/rust-lang/rust-clippy/blob/master/doc/adding_lints.md
+[adding_lints]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/adding_lints.md
 [`README.md`]: https://github.com/rust-lang/rust-clippy/blob/master/README.md
 
 <!-- lint disable no-unused-definitions -->

book/src/development/basics.md

@@ -4,8 +4,8 @@ This document explains the basics for hacking on Clippy. Besides others, this
 includes how to build and test Clippy. For a more in depth description on the
 codebase take a look at [Adding Lints] or [Common Tools].
 
-[Adding Lints]: https://github.com/rust-lang/rust-clippy/blob/master/doc/adding_lints.md
-[Common Tools]: https://github.com/rust-lang/rust-clippy/blob/master/doc/common_tools_writing_lints.md
+[Adding Lints]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/adding_lints.md
+[Common Tools]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/common_tools_writing_lints.md
 
 - [Basics for hacking on Clippy](#basics-for-hacking-on-clippy)
   - [Get the Code](#get-the-code)

clippy_utils/src/ty.rs

@@ -147,7 +147,7 @@ pub fn has_iter_method(cx: &LateContext<'_>, probably_ref_ty: Ty<'_>) -> Option<
 /// * [`get_trait_def_id`](super::get_trait_def_id) to get a trait [`DefId`].
 /// * [Common tools for writing lints] for an example how to use this function and other options.
 ///
-/// [Common tools for writing lints]: https://github.com/rust-lang/rust-clippy/blob/master/doc/common_tools_writing_lints.md#checking-if-a-type-implements-a-specific-trait
+/// [Common tools for writing lints]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/common_tools_writing_lints.md#checking-if-a-type-implements-a-specific-trait
 pub fn implements_trait<'tcx>(
     cx: &LateContext<'tcx>,
     ty: Ty<'tcx>,