Change "Tokenomics" link

packages/apps/src/SideBar/index.tsx

@@ -164,7 +164,7 @@ function SideBar({
                 )
             )}
             <Menu.Divider hidden />
-            <OuterLink url='https://tjoy.joystream.org/' title='Tokenomics' />
+            <OuterLink url='https://joystream.org/testnet' title='Tokenomics' />
             <OuterLink url='https://blog.joystream.org/constantinople-incentives/' title='Earn Monero' />
             <Menu.Divider hidden />
           </div>