remove customize button for unverified channels and small text change

config/locales/en.yml

@@ -113,7 +113,7 @@ en:
       verification_failure_what_happened: What happened
       verification_failure: Your channel could not be verified!
       verification_failure_explanation:
-        domain_not_found: "we could not find your domain."
+        domain_not_found: "We could not find your domain."
         connection_failed: |
           we could not find the public file at https://%{domain}/.well-known/brave-rewards-verification.txt.
         too_many_redirects: "we were redirected too many times to verify your domain. "

nextjs/src/app/[locale]/publishers/home/channels/ChannelCard.tsx

@@ -132,12 +132,14 @@ export default function ChannelCard({ channel, publisherId, onChannelDelete }) {
         >
           {t('shared.remove')}
         </Button>
-        <Button
-          href={`/publishers/contribution_page?channel=${channel.id}`}
-          kind='outline'
-        >
-          {t('shared.customize')}
-        </Button>
+        {!isUnverifiedChannel() && (
+          <Button
+            href={`/publishers/contribution_page?channel=${channel.id}`}
+            kind='outline'
+          >
+            {t('shared.customize')}
+          </Button>
+        )}
       </section>
     </Card>
   );