Updated Wallet Link

Portis.io has not configured the SSL certificate correctly when accessing without the  'www' subdomain. The looks unsecure to the visitor, so I have fixed the link to use the 'www' subdomain.

Author: SavPhill

src/data/wallets/wallet-data.ts

@@ -347,7 +347,7 @@ const walletData: WalletData[] = [
     name: "Portis",
     image_name: "portis",
     brand_color: "#ffffff",
-    url: "https://portis.io",
+    url: "https://www.portis.io",
     wallet_live_date: "Nov, 2018",
     active_development_team: true,
     languages_supported: ["en"],