Fixed description of ConditionalOperator (Azure#16267)

* Fixed description of ConditionalOperator

* Truncated description of ConditionalOperator

Co-authored-by: Avi Jerafi <avjerafi@microsoft.com>

Author: 2 people

specification/monitor/resource-manager/Microsoft.Insights/stable/2018-04-16/scheduledQueryRule_API.json

@@ -546,7 +546,7 @@
         "name": "ConditionalOperator",
         "modelAsString": true
       },
-      "description": "Result Condition Evaluation criteria. Supported Values - 'GreaterThan' or 'LessThan' or 'Equal'."
+      "description": "Result Condition Evaluation criteria."
     },
     "MetricTriggerType": {
       "type": "string",