fixed grammar on one of the alerts (#9799)

Author: Sarthak-Sidhant

frontend/src/components/ui/code-copy-button.tsx

@@ -34,7 +34,7 @@ export default function CodeCopyButton({
       localStorage.setItem("warning", "1");
       setTimeout(() => {
         toast.error(
-          "Be careful when copying scripts from the internet. Always remember check the source!",
+          "Be careful when copying scripts from the internet. Always remember to check the source!",
           { duration: 8000 },
         );
       }, 500);