Update copy during onboarding (#1830)

* Update copy during onboarding

Quite a few users have pointed out that it was not clear that owners can be changed after the Safe is created. E.g. "- Once I’ve created a wallet, it seems it’s possible to revoke and change a signer, but it wasn’t immediately clear if I can change the threshold."

Co-authored-by: Daniel Sanchez <daniel.sanchez@gnosis.pm>

src/routes/open/components/SafeOwnersConfirmationsForm/index.tsx

@@ -157,8 +157,8 @@ const SafeOwnersForm = (props): React.ReactElement => {
           <br />
           <br />
           Add additional owners (e.g. wallets of your teammates) and specify how many of them have to confirm a
-          transaction before it gets executed. In general, the more confirmations required, the more secure is your
-          Safe.
+          transaction before it gets executed. You can also add/remove owners and change the signature threshold after
+          your Safe is created.
         </Paragraph>
       </Block>
       <Hairline />