Rewrite 'What it looks like' subhead to name both wallet modes

The 'keys don't belong to anyone — governed on-chain' line was
vague and didn't reflect what devs actually do. Replace with the
two concrete options: sign with a wallet bound to the action code
itself (action-owned PKP), or with one you control through your
own on-chain governance.

Author: glitch003

src/components/LandingHowItWorks/LandingHowItWorks.tsx

@@ -75,8 +75,9 @@ const LandingHowItWorks = () => {
             </h2>
             <p className="mt-6 text-white/70 text-lg">
               A Lit Action is JavaScript that runs inside the network&apos;s
-              TEE. Deploy it once. The keys it signs with don&apos;t belong to
-              anyone — they&apos;re governed on-chain.
+              TEE. Deploy it once. Sign with a wallet bound to the action code
+              itself, or with one you control through your own on-chain
+              governance.
             </p>
           </div>
 

src/components/Prototypes/Prototype1.tsx

@@ -101,8 +101,8 @@ export default function Prototype1() {
             </h2>
             <p className="mt-6 mx-auto text-white/70 text-lg">
               A Lit Action is JavaScript that runs inside the network&apos;s TEE.
-              Deploy it once. The keys it signs with don&apos;t belong to anyone
-              — they&apos;re governed on-chain.
+              Deploy it once. Sign with a wallet bound to the action code itself,
+              or with one you control through your own on-chain governance.
             </p>
           </div>