Fixed clear linux fetching

For reasons not apparent, clearlinux:latest does not allow apx to fetch
the clear linux image from docker hub, must use the URL included
instead, then everything works as intended

pika-apx-configs/usr/share/apx/stacks/clear-linux.yaml

@@ -1,5 +1,5 @@
 name: clear-linux
-base: clearlinux:latest
+base: docker.io/library/clearlinux:latest
 packages: []
 pkgmanager: swupd
 builtin: true