Renaming the type ContentData to PublishedContentData

Author: JackPenney

src/Our.Umbraco.GraphQL/Types/PublishedContentGraphType.cs

@@ -17,7 +17,7 @@ public class PublishedContentDataGraphType : ObjectGraphType<IPublishedContent>
     {
         public PublishedContentDataGraphType()
         {
-            Name = "ContentData";
+            Name = "PublishedContentData";
 
             this.AddContentDataProperties();
         }