Fix multiline function call style violations

Expand mixed inline/multiline function calls so each argument
is on its own line, matching the one-argument-per-line rule.

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/llm/trace.go

@@ -46,7 +46,9 @@ func startChatSpan(ctx context.Context, tracer trace.Tracer, system string, req
 		attrs = append(attrs, semconv.GenAIRequestStopSequences(req.StopSequences...))
 	}
 
-	return tracer.Start(ctx, spanName,
+	return tracer.Start(
+		ctx,
+		spanName,
 		trace.WithSpanKind(trace.SpanKindClient),
 		trace.WithAttributes(attrs...),
 	)