inform user to reopen polkadot.js extension if closed during contribu…

…tion (#103)

Co-authored-by: brenzi <brenzi@users.noreply.github.com>

src/Participate.js

@@ -166,6 +166,8 @@ export default function Participate (props) {
             Transaction in process
             <br />
             Please wait while the transaction is completed
+            <br />
+            If you accidentally closed the polkadot{'{'}.js{'}'} extension, you can reopen it and continue your ongoing transaction
           </Loader>
         </Dimmer>
       )}