GraphQl-44: added schema for format of textarea ui element

Signed-off-by: vitaliyboyko <v.boyko@atwix.com>

Author: vitaliyboyko

app/code/Magento/CatalogGraphQl/etc/schema.graphqls

@@ -248,8 +248,8 @@ interface ProductInterface @typeResolver(class: "Magento\\CatalogGraphQl\\Model\
     id: Int @doc(description: "The ID number assigned to the product") @resolver(class: "Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\EntityIdToId")
     name: String @doc(description: "The product name. Customers use this name to identify the product.")
     sku: String @doc(description: "A number or code assigned to a product to identify the product, options, price, and manufacturer")
-    description: String @doc(description: "Detailed information about the product. The value can include simple HTML tags.") @resolver(class: "\\Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\ProductHtmlAttribute")
-    short_description: String @doc(description: "A short description of the product. Its use depends on the theme.") @resolver(class: "\\Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\ProductHtmlAttribute")
+    description: ProductHtmlAttribute @doc(description: "Detailed information about the product. The value can include simple HTML tags.")
+    short_description: ProductHtmlAttribute @doc(description: "A short description of the product. Its use depends on the theme.")
     special_price: Float @doc(description: "The discounted price of the product")
     special_from_date: String @doc(description: "The beginning date that a product has a special price")
     special_to_date: String @doc(description: "The end date that a product has a special price")
@@ -551,3 +551,10 @@ type SortFields @doc(description: "SortFields contains a default value for sort
     default: String @doc(description: "Default value of sort fields")
     options: [SortField] @doc(description: "Available sort fields")
 }
+
+type ProductHtmlAttribute {
+    content (
+    format: String! @doc(description: "The format of content")
+): String
+    @resolver(class: "\\Magento\\CatalogGraphQl\\Model\\Resolver\\Product\\ProductHtmlAttribute")
+}