interval update (#18658)

dcgm/README.md

@@ -97,7 +97,7 @@ To configure the exporter in a Docker environment:
 1. Create the file `$PWD/default-counters.csv` which contains the default fields from NVIDIA `etc/default-counters.csv` as well as additional Datadog-recommended fields. To add more fields for collection, follow [these instructions][9]. For the complete list of fields, see the [DCGM API reference manual][10].
 2. Run the Docker container using the following command:
    ```shell
-   sudo docker run --pid=host --privileged -e DCGM_EXPORTER_INTERVAL=3 --gpus all -d -v /proc:/proc -v $PWD/default-counters.csv:/etc/dcgm-exporter/default-counters.csv -p 9400:9400 --name dcgm-exporter nvcr.io/nvidia/k8s/dcgm-exporter:3.1.7-3.1.4-ubuntu20.04
+   sudo docker run --pid=host --privileged -e DCGM_EXPORTER_INTERVAL=5000 --gpus all -d -v /proc:/proc -v $PWD/default-counters.csv:/etc/dcgm-exporter/default-counters.csv -p 9400:9400 --name dcgm-exporter nvcr.io/nvidia/k8s/dcgm-exporter:3.1.7-3.1.4-ubuntu20.04
    ```
 
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