Update synapse swagger definition.

Author: BoWangzi1

specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json

@@ -5857,7 +5857,8 @@
       "properties": {
         "clusterSize": {
           "type": "object",
-          "description": "Number of worker/data nodes in the cluster. Suggestion value: 4. Type: string (or Expression with resultType string)."
+          "x-ms-format": "dfe-int",
+          "description": "Number of worker/data nodes in the cluster. Suggestion value: 4. Type: int (or Expression with resultType int)."
         },
         "timeToLive": {
           "type": "object",

specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/Pipeline.json

@@ -5215,6 +5215,7 @@
         },
         "arguments": {
           "type": "object",
+          "x-ms-format": "dfe-list-string",
           "description": "User specified arguments to HDInsightActivity. Type: array (or Expression with resultType array)."
         },
         "getDebugInfo": {