Update README.md

Keith-CY · web-flow · commit dd344829acb4 · 2022-05-18T16:54:49.000+08:00
diff --git a/README.md b/README.md
@@ -380,7 +380,7 @@ const query = gql`
         to_address_hash
         udt {
           id
-					decimal
+	  decimal
           symbol
         }
       }
