fix lint

Author: rainsxng

docs/core/extensions/httpclient-latency-extensions.md

@@ -45,6 +45,7 @@ builder.Services
 var host = builder.Build();
 await host.RunAsync();
 ```
+
 Access the context:
 
 ```csharp
@@ -160,7 +161,6 @@ That log field is the only built‑in output artifact; no metrics or traces are
 To surface them as metrics, read the context after the request pipeline returns and record (for example) GC pause overlap
 to a histogram and connection initiations to a counter, optionally dimensioned by protocol version.
 
-
 | Name                     | Description                                                             |
 |--------------------------|-------------------------------------------------------------------------|
 | Http.GCPauseTime         | Total GC pause duration overlapping the request.                        |