Added nullable refrence types for C#

Author: im-deviprakash

openapispec/unified/XI-Resellers-API-Spec.yaml

@@ -5,7 +5,7 @@ info:
   title: XI Sdk Resellers
 
   description: |-
-    For resellers seeking to innovate with Ingram Micro's API solutions, automate your eCommerce experience with our array of API's and webhooks to craft a seamless journey for your customers.
+    For Resellers seeking to innovate with Ingram Micro's API solutions, automate your eCommerce experience with our array of API's and webhooks to craft a seamless journey for your customers.
 tags:
   - name: Product Catalog
     description: |-