Replace Digital Ocean with DigitalOcean (#17033)

The former is the official spelling, but both spellings have been
used throughout the docs. This commit replaces the occurrences of
the unofficial spelling with the official one.

content/en/blog/_posts/2015-07-00-The-Growing-Kubernetes-Ecosystem.md

@@ -95,7 +95,7 @@ Mesosphere has incorporated Kubernetes into its Data Center Operating System (DC
 
  |
 
-[Platalytics, Inc][24]. and announced the release of one-touch deploy-anywhere feature for its Spark Application Platform. Based on Kubernetes, Docker, and CoreOS, it allows simple and automated deployment of Apache Hadoop, Spark, and Platalytics platform, with a single click, to all major public clouds, including Google, Amazon, Azure, Digital Ocean, and private on-premise clouds. It also enables hybrid cloud scenarios, where resources on public and private clouds can be mixed.
+[Platalytics, Inc][24]. and announced the release of one-touch deploy-anywhere feature for its Spark Application Platform. Based on Kubernetes, Docker, and CoreOS, it allows simple and automated deployment of Apache Hadoop, Spark, and Platalytics platform, with a single click, to all major public clouds, including Google, Amazon, Azure, DigitalOcean, and private on-premise clouds. It also enables hybrid cloud scenarios, where resources on public and private clouds can be mixed.
 
  |  
 |

content/en/blog/_posts/2019-01-17-update-volume-snapshot-alpha.md

@@ -141,7 +141,7 @@ As of the publishing of this blog post, the following CSI drivers support snapsh
 - [Ceph RBD CSI Driver](https://github.com/ceph/ceph-csi/tree/master/pkg/rbd)
 - [Portworx CSI Driver](https://github.com/libopenstorage/openstorage/tree/master/csi)
 - [GlusterFS CSI Driver](https://github.com/gluster/gluster-csi-driver)
-- [Digital Ocean CSI Driver](https://github.com/digitalocean/csi-digitalocean)
+- [DigitalOcean CSI Driver](https://github.com/digitalocean/csi-digitalocean)
 - [Ember CSI Driver](https://github.com/embercsi/ember-csi)
 - [Cinder CSI Driver](https://github.com/kubernetes/cloud-provider-openstack/tree/master/pkg/csi/cinder)
 - [Datera CSI Driver](https://github.com/Datera/datera-csi)

content/en/docs/concepts/architecture/cloud-controller.md

@@ -227,7 +227,7 @@ The following cloud providers have implemented CCMs:
 * [AWS](https://github.com/kubernetes/cloud-provider-aws)
 * [Azure](https://github.com/kubernetes/cloud-provider-azure)
 * [BaiduCloud](https://github.com/baidu/cloud-provider-baiducloud)
-* [Digital Ocean](https://github.com/digitalocean/digitalocean-cloud-controller-manager)
+* [DigitalOcean](https://github.com/digitalocean/digitalocean-cloud-controller-manager)
 * [GCP](https://github.com/kubernetes/cloud-provider-gcp)
 * [Linode](https://github.com/linode/linode-cloud-controller-manager)
 * [OpenStack](https://github.com/kubernetes/cloud-provider-openstack)

content/en/docs/setup/production-environment/tools/kubeadm/troubleshooting-kubeadm.md

@@ -198,15 +198,15 @@ Error from server: Get https://10.19.0.41:10250/containerLogs/default/mysql-ddc6
 ```
 
 - This may be due to Kubernetes using an IP that can not communicate with other IPs on the seemingly same subnet, possibly by policy of the machine provider.
-- Digital Ocean assigns a public IP to `eth0` as well as a private one to be used internally as anchor for their floating IP feature, yet `kubelet` will pick the latter as the node's `InternalIP` instead of the public one.
+- DigitalOcean assigns a public IP to `eth0` as well as a private one to be used internally as anchor for their floating IP feature, yet `kubelet` will pick the latter as the node's `InternalIP` instead of the public one.
 
-  Use `ip addr show` to check for this scenario instead of `ifconfig` because `ifconfig` will not display the offending alias IP address. Alternatively an API endpoint specific to Digital Ocean allows to query for the anchor IP from the droplet:
+  Use `ip addr show` to check for this scenario instead of `ifconfig` because `ifconfig` will not display the offending alias IP address. Alternatively an API endpoint specific to DigitalOcean allows to query for the anchor IP from the droplet:
 
   ```sh
   curl http://169.254.169.254/metadata/v1/interfaces/public/0/anchor_ipv4/address
   ```
 
-  The workaround is to tell `kubelet` which IP to use using `--node-ip`. When using Digital Ocean, it can be the public one (assigned to `eth0`) or the private one (assigned to `eth1`) should you want to use the optional private network. The [`KubeletExtraArgs` section of the kubeadm `NodeRegistrationOptions` structure](https://github.com/kubernetes/kubernetes/blob/release-1.13/cmd/kubeadm/app/apis/kubeadm/v1beta1/types.go) can be used for this.
+  The workaround is to tell `kubelet` which IP to use using `--node-ip`. When using DigitalOcean, it can be the public one (assigned to `eth0`) or the private one (assigned to `eth1`) should you want to use the optional private network. The [`KubeletExtraArgs` section of the kubeadm `NodeRegistrationOptions` structure](https://github.com/kubernetes/kubernetes/blob/release-1.13/cmd/kubeadm/app/apis/kubeadm/v1beta1/types.go) can be used for this.
 
   Then restart `kubelet`: