Update docs/airgap.md

Co-authored-by: Jillian Maroket <[email protected]>

Author: FrankYang0529

docs/airgap.md

@@ -64,7 +64,7 @@ As a result, we recommend monitoring each [RKE2 release](https://github.com/ranc
 Rancher determines the `rancher-agent` image to be used whenever a Harvester cluster is imported. If the image is not included in the Harvester ISO, it must be pulled from the internet and loaded on each node, or pushed to the Harvester cluster's registry.
 
 ```bash
-# on a computer which can reach the internet and harvester cluster
+# Run the following commands on a computer that can access both the internet and the Harvester cluster.
 docker pull rancher/rancher-agent:<version>
 docker save rancher/rancher-agent:<version> -o rancher-agent-<version>.tar