Change message signed by nitro key

src/pages/SignWithNitroKey.tsx

@@ -35,7 +35,7 @@ const SignWithNitroKey = () => {
 
   const message = useMemo(() => {
     return {
-      msg: "Register my account as a validator on the Laconic network",
+      msg: "Register my account as a participant on the Laconic network",
       address: ethAddress,
     };
   }, [ethAddress]);