Update GET /commands cursor docs to match reality.

This also matches `GET /runs/{id}/commands` and `GET /maintenance_runs/{id}/commands`.

robot-server/robot_server/commands/router.py

@@ -140,7 +140,7 @@ async def get_commands_list(
         description=(
             "The starting index of the desired first command in the list."
             " If unspecified, a cursor will be selected automatically"
-            " based on the next queued or more recently executed command."
+            " based on the currently running or most recently executed command."
         ),
     ),
     pageLength: int = Query(