update package.json

package.json

   "displayName": "Demo Team Digital Human",
   "version": "0.1.0-preview",
   "unity": "2019.3",
+  "description": "Library of digital human tech features from 'The Heretic'.",
-  },
-  "description": "Library of digital human tech features from 'The Heretic'."
+  }
 }