Add the command finish steps

Signed-off-by: Zoltan Kis <[email protected]>

index.bs

@@ -1489,13 +1489,27 @@ partial interface MLCommandEncoder {
 };
 </script>
 
-<div algorithm=mlcommandencoder.finish>
+<div>
     **Arguments:**
         - *descriptor*: an optional {{GPUCommandBufferDescriptor}}. Descriptor of the command buffer.
 
     **Returns:** {{GPUCommandBuffer}}.
 </div>
 
+<details open>
+  <summary>
+    The {{MLCommandEncoder/finish(descriptor)}} method steps are:
+  </summary>
+  <div algorithm=mlcommandencoder.finish class=algorithm-steps>
+    1. If any of the following sub-steps fail, throw an "{{OperationError}}" {{DOMException}} and stop.
+        1. Make a request to the underlying platform to complete the recording of the ML workload, given |descriptor|.
+            <div class="note">
+                See the related <a href="https://www.w3.org/TR/webgpu/#dom-gpucommandencoder-finish">WebGPU steps</a>.
+            </div>
+    1. Return a {{GPUCommandBuffer}} containing the recorded workload.
+  </div>
+</details>
+
 ## The MLGraphBuilder interface ## {#api-mlgraphbuilder}
 
 The {{MLGraphBuilder}} interface defines a set of operations as identified by the [[#usecases]] that can be composed into a computational graph. It also represents the intermediate state of a graph building session.