Add example to image sub-section

Author: Suramya Shah

schema.json

@@ -18,7 +18,7 @@
         },
         "image": {
           "type": "string",
-          "description": "URL (as per RFC 3986) to a image in JPEG or PNG format"
+          "description": "e.g. example.com/Abcxyz [URL (as per RFC 3986) to a image in JPEG or PNG format]"
         },
         "email": {
           "type": "string",