Fix new warnings emitted by doc_include_without_cfg

Author: GuillaumeGomez

clippy_config/src/conf.rs

@@ -154,7 +154,7 @@ macro_rules! define_Conf {
     )*) => {
         /// Clippy lint configuration
         pub struct Conf {
-            $($(#[doc = $doc])+ pub $name: $ty,)*
+            $($(#[cfg_attr(doc, doc = $doc)])+ pub $name: $ty,)*
         }
 
         mod defaults {

clippy_lints/src/doc/mod.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::lint_without_lint_pass)]
+
 mod lazy_continuation;
 mod too_long_first_doc_paragraph;