fix(example): updated example in readme

README.md

@@ -46,6 +46,8 @@ An example of an entry from the dataset is given below:
 
 ```json
 {
+  "header": "Attack",
+  "subheader": "Attacking",
   "text": "Kindred: \"The masks of the Kindred seek you!\"",
   "source": "https://static.wikia.nocookie.net/leagueoflegends/images/1/12/Kindred_Original_Passive_Mark_Enemy_6.ogg/revision/latest?cb=20221204121356",
   "champion": "kindred"