fix(assets): add asset description field

Author: KSHITIZ6341

xero_assets.yaml

@@ -264,6 +264,7 @@ paths:
             example:
               assetName: Computer74863
               assetNumber: "123477544"
+              description: A computer for computing
               purchaseDate: "2020-01-01"
               purchasePrice: 100.0
               disposalPrice: 23.23
@@ -316,6 +317,7 @@ paths:
                 assetId: 68f17094-af97-4f1b-b36b-013b45b6ad3c
                 assetName: Computer47822
                 assetNumber: "123478074"
+                description: A computer for computing
                 purchaseDate: 2020-01-01T00:00:00
                 purchasePrice: 100.0000
                 disposalPrice: 23.0000
@@ -661,6 +663,10 @@ components:
           type: string
           description: Must be unique.
           example: FA-0013
+        description:
+          type: string
+          description: A description of the asset. May be supplied when creating or updating an asset and is returned for individual assets when set; may be omitted from collection responses.
+          example: A computer for computing
         purchaseDate:
           type: string
           format: date