Merge pull request #2789 from sahandsn/patch-6

Update part6d.md

Author: mluukkai

src/content/6/en/part6d.md

@@ -592,7 +592,7 @@ import { useContext } from 'react' // highlight-line
 import CounterContext from './CounterContext'
 
 const Display = () => {
-  const [counter, dispatch] = useContext(CounterContext) // highlight-line
+  const [counter] = useContext(CounterContext) // highlight-line
   return <div>
     {counter}
   </div>