Responses change for two actions (#2103)

* Updated iconBrandColor in apiProperties.json

* Updated API Swagger Definition file

* Updated swagger and readme file

* updates in swagger and readme

* swagger and readme update

* two responses changed

Co-authored-by: MohsinAQ <90461565+MohsinAQ@users.noreply.github.com>

certified-connectors/Power Textor/apiDefinition.swagger.json

@@ -3226,9 +3226,14 @@
           "400": {
             "description": "error",
             "schema": {
+              "type": "object",
+              "properties": {
+                "Error": {
                   "type": "string"
                 }
               }
+            }
+          }
         },
         "summary": "Send text (SMS) message to a number",
         "description": "Send text message to a number directly, without specifying name of the user , while the contact is automatically created in Power Textor.",
@@ -6916,9 +6921,14 @@
           "400": {
             "description": "error",
             "schema": {
+              "type": "object",
+              "properties": {
+                "Error": {
                   "type": "string"
                 }
               }
+            }
+          }
         },
         "description": "Send text message to a number directly, without specifying name of the user , while the contact is automatically created in PowerTextor.",
         "summary": "Send a text (SMS) message",