update docs

Author: duncanista

bottlecap/src/bin/bottlecap/main.rs

@@ -1394,6 +1394,7 @@ mod flush_handles_tests {
         let mut handles = FlushHandles::new();
         let handle = tokio::spawn(async {
             sleep(Duration::from_millis(5)).await;
+            Vec::new() // Return empty Vec for stats retry
         });
         handles.stats_flush_handles.push(handle);
 

bottlecap/src/traces/trace_flusher.rs

@@ -28,9 +28,8 @@ pub struct TraceFlusher {
     /// Each trace batch is sent to the primary endpoint AND all additional endpoints.
     pub additional_endpoints: Vec<Endpoint>,
     /// Cached HTTP client, lazily initialized on first use.
-    /// TODO: TraceFlusher and StatsFlusher both hit trace.agent.datadoghq.{site} and could
-    /// share a single HTTP client for better connection pooling. Consider using a
-    /// SharedHyperClient wrapper passed to both flushers from main.rs.
+    /// TODO: `TraceFlusher` and `StatsFlusher` both hit trace.agent.datadoghq.{site} and could
+    /// share a single HTTP client for better connection pooling.
     http_client: OnceCell<HyperClient>,
 }