Fix clippy.

src/intermediate/registry.rs

@@ -180,6 +180,7 @@ async fn convert_definition_contents<'orig, 'parse>(
 }
 
 /// Take a footnote definition that has not yet received a reference and move it into the active footnotes.
+#[allow(clippy::needless_lifetimes)]
 pub(crate) async fn promote_footnote_definition<'orig, 'parse>(
     intermediate_context: IntermediateContext<'orig, 'parse>,
     label: &'parse str,