{
    "tenants": [{
        "tenantURI": "watson",
        "description": "Sample tenant configuration for CP4D.",
        "conversation": {
            "url": "",
            "workspaceID": "",
            "bearerToken": ""
        },
        "stt": {
            "credentials": {
                "url": "",
                "bearerToken": ""
            }
        },
        "tts": {
            "credentials": {
                "url": "",
                "bearerToken": ""
            },
            "config": {
                "voice": "en-US_AllisonV3Voice"
            }
        }
    }]
}

{
  "tenants": [{
      "tenantURI": "1234567890",
      "description": "Voice Gateway Demo US 1",
      "conversation": {
        "url": "",
        "workspaceID": "",
        "bearerToken": ""
      },
      "stt": {
        "credentials": {
          "url": "",
          "bearerToken": ""
        }
      },
      "tts": {
        "credentials": {
          "url": "",
          "bearerToken": ""
        },
        "config": {
          "voice": ""
       }
      }
    },
    {
      "tenantURI": "0987654321",
      "description": "Voice Gateway Demo US 2",
      "conversation": {
        "url": "",
        "workspaceID": "",
        "bearerToken": ""
      },
      "stt": {
        "credentials": {
          "url": "",    
          "bearerToken": ""
        }
      },
      "tts": {
        "credentials": {
          "url": "",
          "bearerToken": ""
        },
        "config": {
          "voice": ""
       }
      }
    }
  ]
}

Clarify that tenantURI is usually a phone number
Clarify that tenantURI is usually a phone number