DOC: update ec2 docker operations to include CreateFleet and DeleteFleets (#553)

Author: quetzalliwrites

src/content/docs/aws/services/ec2.mdx

@@ -448,6 +448,8 @@ Any operation not listed below will use the mock VM manager.
 | `StopInstances`       | Pauses the Docker containers that back instances |
 | `StartInstances`      | Resumes the Docker containers that back instances |
 | `TerminateInstances`  | Stops the Docker containers that back instances |
+| `CreateFleet`         | Spawns Docker containers or Kubernetes pods to fulfill fleet capacity requests. Supports On-Demand, Spot, and mixed fleets. |
+| `DeleteFleets`        | Stops and removes the underlying containers or pods when `TerminateInstances` is set to `true`. | 
 
 ## Libvirt VM Manager