added keywords

Author: danciaclara

docs/self-hosting/manage/update-plane/airgapped-edition/update-airgapped-docker.md

@@ -1,6 +1,7 @@
 ---
 title: Upgrade Airgapped Edition (Docker)
 description: Upgrade your airgapped Plane instance running on Docker by cloning images, replacing configuration files, and uploading a new license.
+keywords: plane airgapped upgrade, air-gapped docker upgrade, plane offline update
 ---
 
 # Update Airgapped Edition on Docker

docs/self-hosting/manage/update-plane/airgapped-edition/update-airgapped-kubernetes.md

@@ -1,6 +1,7 @@
 ---
 title: Upgrade Airgapped Edition on Kubernetes
 description: Upgrade your airgapped Plane instance running on Kubernetes by cloning images, updating the Helm chart, and redeploying.
+keywords: plane airgapped kubernetes upgrade, air-gapped helm chart upgrade, plane offline k8s update
 ---
 
 # Update Airgapped Edition on Kubernetes