Fix Clippy chapter

mo8it · mo8it · commit 628ef5533742 · 2025-08-21T23:46:37.000+02:00
diff --git a/exercises/README.md b/exercises/README.md
@@ -23,5 +23,5 @@
 | smart_pointers         | §15, §16.3          |
 | threads                | §16.1-3             |
 | macros                 | §20.5               |
-| clippy                 | §21.4               |
+| clippy                 | Appendix D          |
 | conversions            | n/a                 |
