Replace bad documentation comment
Added a better documentation comment that links the relevant trait and
gives some insight how the type is used.
@@ -26,7 +26,7 @@ use crate::error::ResourceTemporarilyUnavailableError;
/// to a NodeIdStoreError enum member.
#[derive(Debug)]
-/// NodeIdStore error enum
+/// Error states for fallible [NodeIdStore](../trait.NodeIdStore.html) operations.
pub enum NodeIdStoreError {
InternalError(InternalError),
ResourceTemporarilyUnavailableError(ResourceTemporarilyUnavailableError),
