fix: add description to tekton task specification

Description is required in order to publish
the package in ArtifactHub.

Jira-Url: https://issues.redhat.com/browse/CNV-37578
Signed-off-by: Ben Oukhanov <[email protected]>

Author: codingben

tasks/kubevirt-disk-uploader/0.5.0/kubevirt-disk-uploader.yaml

@@ -12,6 +12,9 @@ metadata:
     tekton.dev/displayName: "KubeVirt Disk Uploader"
     tekton.dev/platforms: "linux/amd64"
 spec:
+  description: >-
+    Automates the extraction of disk and uploads it to a container registry,
+    to be used in multiple Kubernetes clusters.
   params:
   - name: VM_NAME
     description: The name of the virtual machine