Merge pull request #3713 from myverdict/patch-2

Update part6d.md

Author: mluukkai

src/content/6/en/part6d.md

@@ -260,14 +260,14 @@ import { getNotes, createNote, updateNote } from './requests' // highlight-line
 const App = () => {
   // ...
 
+  // highlight-start
   const updateNoteMutation = useMutation({
     mutationFn: updateNote,
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['notes'] })
     },
   })
 
-  // highlight-start
   const toggleImportance = (note) => {
     updateNoteMutation.mutate({...note, important: !note.important })
   }