Update CustomSettings description to include how to disable TLS setti…

…ngs (Azure#1736)

* Add Query to Export API and nit documentation update

* Fixed Parameter name

* Fixed Parameter name

* Update description to include setting to disable TLS

* Update information for cipher.

* Fix spelling of cipher

specification/apimanagement/resource-manager/Microsoft.ApiManagement/2017-03-01/apimdeployment.json

@@ -822,7 +822,7 @@
           "additionalProperties": {
             "type": "string"
           },
-          "description": "Custom properties of the API Management service, like disabling TLS 1.0."
+          "description": "Custom properties of the API Management service. Setting `Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Ciphers.TripleDes168` will disable the cipher TLS_RSA_WITH_3DES_EDE_CBC_SHA for all TLS(1.0, 1.1 and 1.2). Setting `Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Protocols.Tls11` can be used to disable just TLS 1.1 and setting `Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Protocols.Tls10` can be used to disable TLS 1.0 on an API Management service."
         },
         "certificates": {
           "type": "array",