Add Bitcoin logo and link

Update the FinancialFreedomSection with the official Bitcoin logo and link.

Author: lovable-dev[bot]

src/pages/Academy.tsx

@@ -230,6 +230,11 @@ const Academy: React.FC = () => {
       url: "https://www.alchemy.com/",
       logoUrl: "https://www.datocms-assets.com/105223/1700264554-brand-image.svg"
     },
+    { 
+      name: "Bitcoin", 
+      url: "https://bitcoin.org",
+      logoUrl: "https://upload.wikimedia.org/wikipedia/commons/4/46/Bitcoin.svg"
+    },
     { 
       name: "AulaFacil", 
       url: "https://www.aulafacil.com/",