Update docs and metadata to reflect Vault is not open source

Co-authored-by: yashjoisar <[email protected]>

Author: cursoragent

apps/portal/src/app/vault/faqs/page.mdx

@@ -44,3 +44,7 @@ The admin key is temporarily stored in dashboard when performing actions that re
 Please note, you should never share your admin key with third parties.
 </Details>
 
+<Details summary="Is Vault open source?">
+Vault is not yet open source, but we plan to release it soon.
+</Details>
+

apps/portal/src/app/vault/layout.tsx

@@ -12,7 +12,7 @@ export default async function Layout(props: { children: React.ReactNode }) {
 
 export const metadata = createMetadata({
   description:
-    "Vault is an open-source non-custodial key management service, secured with TEE architecture (AWS Nitro Enclaves) and designed for blockchain applications.",
+    "Vault is a non-custodial key management service secured with TEE architecture (AWS Nitro Enclaves), designed for blockchain applications.",
   title: "Vault",
   image: {
     icon: "vault",

apps/portal/src/app/vault/page.mdx

@@ -5,7 +5,7 @@ import { ArrowLeftRightIcon, UserLockIcon, UsersIcon, WalletIcon } from "lucide-
 
 export const metadata = createMetadata({
 	title: "thirdweb Vault",
-	description: "An open-source, secure key management service for storing, managing, and protecting cryptographic keys and secrets.",
+	description: "A secure key management service for storing, managing, and protecting cryptographic keys and secrets.",
     image: {
         icon: "vault",
         title: "thirdweb Vault",
@@ -14,7 +14,7 @@ export const metadata = createMetadata({
 
 # Vault
 
-Vault is an open-source non-custodial key management service, secured with TEE architecture (AWS Nitro Enclaves) and designed for blockchain applications.
+Vault is a non-custodial key management service secured with TEE architecture (AWS Nitro Enclaves), designed for blockchain applications.
 
 ## Features