Address additional review comments

Author: smoelius

clippy_config/src/types.rs

@@ -40,9 +40,11 @@ impl<'de, const REPLACEMENT_ALLOWED: bool> Deserialize<'de> for DisallowedPath<R
     }
 }
 
+// `DisallowedPathEnum` is an implementation detail to enable the `Deserialize` implementation just
+// above. `DisallowedPathEnum` is not meant to be used outside of this file.
 #[derive(Debug, Deserialize, Serialize)]
 #[serde(untagged)]
-pub enum DisallowedPathEnum {
+enum DisallowedPathEnum {
     Simple(String),
     WithReason {
         path: String,

clippy_lints/src/disallowed_types.rs

@@ -33,7 +33,8 @@ declare_clippy_lint! {
     ///     # is disallowed.
     ///     { path = "std::net::Ipv4Addr", reason = "no IPv4 allowed" },
     ///     # Can also add a `replacement` that will be offered as a suggestion.
-    ///     { path = "std::sync::Mutex", reason = "prefer faster & simpler non-poisonable mutex", replacement = "parking_lot::Mutex" },    /// ]
+    ///     { path = "std::sync::Mutex", reason = "prefer faster & simpler non-poisonable mutex", replacement = "parking_lot::Mutex" },
+    /// ]
     /// ```
     ///
     /// ```rust,ignore