Update workers-api.mdx (#22200)

Author: jalmonter

src/content/docs/workflows/build/workers-api.mdx

@@ -402,7 +402,7 @@ Return the id of a Workflow.
 
 Return the status of a running Workflow instance.
 
-* <code>status(): Promise&lt;void&gt;</code>
+* <code>status(): Promise&lt;InstanceStatus&gt;</code>
 
 ### pause