job_queue: fix dangling rustdoc intra-doc link left by strum conversion

hive-c0re/src/job_queue/mod.rs

@@ -281,7 +281,7 @@ impl JobQueue {
     /// so both are running and both name `a`. Anything keying this set by agent
     /// alone will silently drop one — see [`scheduler`].
     ///
-    /// `label` is the node's own wire tag ([`NodeKind::as_str`]), the same
+    /// `label` is the node's own wire tag (`NodeKind`'s `&str` conversion), the same
     /// vocabulary the graph wire ships as a node's label, so a pill and a
     /// graph node name an operation identically. `takes_container_down` is the
     /// crash watcher's