Update frontend/src/App.jsx

frontend/src/App.jsx

@@ -519,6 +519,12 @@ function App() {
           blueWin={matchData?.blue_win ?? null}
         />
       )}
+      
+      <footer className="riot-disclaimer">
+        Rift Breakdown isn&#39;t endorsed by Riot Games and doesn&#39;t reflect the views or opinions
+        of Riot Games or anyone officially involved in producing or managing Riot Games properties.
+        Riot Games, and all associated properties are trademarks or registered trademarks of Riot Games, Inc.
+      </footer>
     </>
   );
 }