Bump Fleet version in installation documentation (#5053)

* chore: Update Fleet CRD asset URL

Made with ❤️️ by updatecli

* chore: Update Fleet asset URL

Made with ❤️️ by updatecli

---------

Co-authored-by: fleet-bot <fleet@suse.de>

Author: rancherbot

README.md

@@ -37,9 +37,9 @@ Install the Fleet Helm charts (there's two because we separate out CRDs for ulti
 
 ```shell
 helm -n cattle-fleet-system install --create-namespace --wait \
-    fleet-crd https://github.com/rancher/fleet/releases/download/v0.15.0/fleet-crd-0.15.0.tgz
+    fleet-crd https://github.com/rancher/fleet/releases/download/v0.15.1/fleet-crd-0.15.1.tgz
 helm -n cattle-fleet-system install --create-namespace --wait \
-    fleet https://github.com/rancher/fleet/releases/download/v0.15.0/fleet-0.15.0.tgz
+    fleet https://github.com/rancher/fleet/releases/download/v0.15.1/fleet-0.15.1.tgz
 ```
 
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