Merge pull request #47941 from kundan2707/cosign_link_update

Changes outdated cosign link

content/en/docs/tasks/administer-cluster/verify-signed-artifacts.md

@@ -13,7 +13,7 @@ weight: 420
 
 You will need to have the following tools installed:
 
-- `cosign` ([install guide](https://docs.sigstore.dev/cosign/installation/))
+- `cosign` ([install guide](https://docs.sigstore.dev/cosign/system_config/installation/))
 - `curl` (often provided by your operating system)
 - `jq` ([download jq](https://jqlang.github.io/jq/download/))
 
@@ -144,4 +144,4 @@ cosign verify-blob \
     --certificate-identity krel-staging@k8s-releng-prod.iam.gserviceaccount.com \
     --certificate-oidc-issuer https://accounts.google.com \
     "$VERSION.spdx"
-```
+```