Fixing CSS create secret, it was missing the Body part

Author: Tijoy Tom

articles/service-fabric/service-fabric-application-secret-store.md

@@ -72,7 +72,8 @@ Use the following template to use Resource Manager to create the secret resource
 To create a `supersecret` secret resource by using the REST API, make a PUT request to `https://<clusterfqdn>:19080/Resources/Secrets/supersecret?api-version=6.4-preview`. You need the cluster certificate or admin client certificate to create a secret resource.
 
 ```powershell
-Invoke-WebRequest  -Uri https://<clusterfqdn>:19080/Resources/Secrets/supersecret?api-version=6.4-preview -Method PUT -CertificateThumbprint <CertThumbprint>
+$json = '{"properties": {"kind": "inlinedValue", "contentType": "text/plain", "description": "supersecret"}}'
+Invoke-WebRequest  -Uri https://<clusterfqdn>:19080/Resources/Secrets/supersecret?api-version=6.4-preview -Method PUT -CertificateThumbprint <CertThumbprint> -Body $json
 ```
 
 ## Set the secret value