refactor: update navigation links in CallToAction and NodeHero components

- Changed CallToAction "Join the Network" button from /network#download to /network
- Changed NodeHero "Explore Docs" button from #node-architecture anchor to external ThreeFold hosting FAQ link with target="_blank"

src/pages/home/CallToAction.tsx

@@ -51,7 +51,7 @@ export function CallToAction() {
             </P>
 
             <div className="mt-10 flex flex-wrap justify-center items-center gap-x-6 gap-y-4">
-              <Button to="/network#download" variant="solid" color="cyan">
+              <Button to="/network" variant="solid" color="cyan">
                 Join the Network
               </Button>
 

src/pages/nodes/NodeHero.tsx

@@ -40,7 +40,7 @@ export function NodeHero() {
               >
                 How it works
               </Button>
-              <Button to="#node-architecture" as="a" variant="outline">
+              <Button to="https://threefold.info/mycelium_economics/docs/faq/hosting_faq" as="a" variant="outline" target="_blank">
                 Explore Docs
               </Button>
             </div>