refactor: remove arrow icons and clean up "Explore Docs" button text across multiple hero sections

- Removed arrow icon (→) from "Explore Docs" buttons in CloudHeroNew, GpuHero, and StorageHero components
- Removed ArrowRightIcon from HomeCTA "Explore Docs" button
- Fixed whitespace formatting in CloudArchitecture "Explore Docs" button
- Added comment block in Homepod for commented out "Explore Docs" button

src/pages/gpu/GpuHero.tsx

@@ -26,7 +26,7 @@ export function GpuHero() {
                 How it works
               </Button>
               <Button to="#gpu-architecture" as="a" variant="outline">
-                Explore Docs <span aria-hidden="true">→</span>
+                Explore Docs
               </Button>
             </div>
           </div>