Update screenshots and README with .NET-aligned span attributes

Screenshots now reflect updated span naming (orchestration:<name>),
Server span kind, durabletask.type attribute, and
Microsoft.DurableTask tracer name. Added span detail screenshot
showing full attribute list.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: torosent

samples/README.md

@@ -59,14 +59,26 @@ Shows the trace from `durabletask-java-tracing-sample` service with 10 spans cov
 
 Full span hierarchy showing parent-child relationships:
 - `create_orchestration:TracingOrchestration` (parent)
-  - `orchestration:<instanceId>` (orchestration replays)
+  - `orchestration:TracingOrchestration` (orchestration replays)
     - `activity:Reverse`
     - `activity:Capitalize`
-  - `orchestration:<childInstanceId>` (ChildOrchestration)
+  - `orchestration:ChildOrchestration` (sub-orchestration)
     - `activity:AddSuffix`
 
 ![Jaeger trace detail](images/jaeger-full-trace-detail.png)
 
+### Jaeger — Span Attributes
+
+Activity span showing attributes aligned with the .NET SDK schema:
+- `durabletask.type=activity`
+- `durabletask.task.name=Reverse`
+- `durabletask.task.instance_id=<orchestrationId>`
+- `durabletask.task.task_id=0`
+- `otel.scope.name=Microsoft.DurableTask`
+- `span.kind=server`
+
+![Jaeger span detail](images/jaeger-span-detail.png)
+
 ### DTS Dashboard — Completed Orchestrations
 
 Both `TracingOrchestration` and `ChildOrchestration` completed successfully.