worked on updating legibility of History component code

Author: guizzettic

src/app/components/History.tsx

@@ -239,8 +239,7 @@ function History(props: any) {
   };
 
   // below we are rendering the LegendKey component and passing hierarchy as props
-  // then rendering each node in History tab to render using D3
-
+  // then rendering each node in History tab to render using D3, which will share area with LegendKey
   return (
     <>
       <div>