Fix typos in the cosmosdb yaml file

[buhongw7583c]

Closes #1030
Correct the sample cosmosDB yaml file.

What this PR does / why we need it:
To correct the typos and format issues of the sample cosmosDB yaml file.

Special notes for your reviewer:
--Use the current cosmosDB sample yaml file to enable virtual network and iprules (firewall). The cosmosDB would be created with no vnet/firewall settings.
-- Apply the modified yaml file and the vnet/firewall shall be configured.

To quickly check the yaml file settings have been submitted from kubectl. Be able to see the ip rules, virtual network rules have all been set with the correct values.

 kubectl describe cosmosdb                   
Name:         cosmosdb-sample-1
Namespace:    default
Labels:       <none>
Annotations:  kubectl.kubernetes.io/last-applied-configuration:
                {"apiVersion":"azure.microsoft.com/v1alpha1","kind":"CosmosDB","metadata":{"annotations":{},"name":"cosmosdb-sample-1","namespace":"defaul...
API Version:  azure.microsoft.com/v1alpha1
Kind:         CosmosDB
Metadata:
  Creation Timestamp:  2020-05-06T10:58:52Z
  Finalizers:
    azure.microsoft.com/finalizer
  Generation:  2
  Owner References:
    API Version:           azure.microsoft.com/v1alpha1
    Block Owner Deletion:  true
    Controller:            true
    Kind:                  ResourceGroup
    Name:                  resourcegroup-azure-operators
    UID:                   79217d7a-7f0b-4ce4-8e3f-d423e7fb1f68
  Resource Version:        57355
  Self Link:               /apis/azure.microsoft.com/v1alpha1/namespaces/default/cosmosdbs/cosmosdb-sample-1
  UID:                     33ccd8cc-256f-4077-ba16-289a4b295c86
Spec:
  Ip Rules:
    104.42.195.92
    1.2.3.4
  Kind:      GlobalDocumentDB
  Location:  westus
  Properties:
    Database Account Offer Type:        Standard
    Is Virtual Network Filter Enabled:  true
  Resource Group:                       resourcegroup-azure-operators
  Virtual Network Rules:
    Ignore Missing V Net Service Endpoint:  true
    Subnet ID:                              /subscriptions/***/resourceGroups/resourcegroup-azure-operators/providers/Microsoft.Network/virtualNetworks/vnet-sample-01/subnets/test1

How does this PR make you feel:

If applicable:

• this PR contains documentation
• this PR contains tests