Sort providers

Author: davidjumani

docs/book/src/clusterctl/provider-contract.md

@@ -190,19 +190,19 @@ providers.
 |CACPN         | cluster.x-k8s.io/provider=control-plane-nested         |
 |CAPA          | cluster.x-k8s.io/provider=infrastructure-aws           |
 |CAPB          | cluster.x-k8s.io/provider=infrastructure-byoh          |
+|CAPC          | cluster.x-k8s.io/provider=infrastructure-cloudstack    |
+|CAPD          | cluster.x-k8s.io/provider=infrastructure-docker        |
+|CAPDO         | cluster.x-k8s.io/provider=infrastructure-digitalocean  |
+|CAPG          | cluster.x-k8s.io/provider=infrastructure-gcp           |
 |CAPH          | cluster.x-k8s.io/provider=infrastructure-hetzner       |
 |CAPIBM        | cluster.x-k8s.io/provider=infrastructure-ibmcloud      |
-|CAPV          | cluster.x-k8s.io/provider=infrastructure-vsphere       |
-|CAPD          | cluster.x-k8s.io/provider=infrastructure-docker        |
 |CAPM3         | cluster.x-k8s.io/provider=infrastructure-metal3        |
 |CAPN          | cluster.x-k8s.io/provider=infrastructure-nested        |
+|CAPO          | cluster.x-k8s.io/provider=infrastructure-openstack     |
+|CAPOCI        | cluster.x-k8s.io/provider=infrastructure-oci           |
 |CAPP          | cluster.x-k8s.io/provider=infrastructure-packet        |
+|CAPV          | cluster.x-k8s.io/provider=infrastructure-vsphere       |
 |CAPZ          | cluster.x-k8s.io/provider=infrastructure-azure         |
-|CAPOCI        | cluster.x-k8s.io/provider=infrastructure-oci           |
-|CAPO          | cluster.x-k8s.io/provider=infrastructure-openstack     |
-|CAPDO         | cluster.x-k8s.io/provider=infrastructure-digitalocean  |
-|CAPG          | cluster.x-k8s.io/provider=infrastructure-gcp           |
-|CAPC          | cluster.x-k8s.io/provider=infrastructure-cloudstack    |
 
 ### Workload cluster templates