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

docs/web-ui/dashboard.md

@@ -848,7 +848,7 @@ progresses (a rebuild reads `stop_for_update`, then `swap`, then
 life). Two consequences for anything rendering it:
 
 - The label vocabulary is **open** — it's the node's own wire tag
-  (`NodeKind::as_str`, the same strings the graph wire's node
+  (`NodeKind`'s `&str` conversion, the same strings the graph wire's node
   labels carry), not a fixed set. Treat it as an opaque display
   string; don't switch on specific values. `restarting` in
   particular no longer exists, because no node kind is unique to a

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