fix(landing): point Mothership and Workflows footer links to docs root

These docs pages don't exist yet — link to docs.sim.ai until they are published.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/(landing)/components/footer/footer.tsx

@@ -14,8 +14,8 @@ interface FooterItem {
 }
 
 const PRODUCT_LINKS: FooterItem[] = [
-  { label: 'Mothership', href: 'https://docs.sim.ai/mothership', external: true },
-  { label: 'Workflows', href: 'https://docs.sim.ai/workflows', external: true },
+  { label: 'Mothership', href: 'https://docs.sim.ai', external: true },
+  { label: 'Workflows', href: 'https://docs.sim.ai', external: true },
   { label: 'Knowledge Base', href: 'https://docs.sim.ai/knowledgebase', external: true },
   { label: 'Tables', href: 'https://docs.sim.ai/tables', external: true },
   { label: 'MCP', href: 'https://docs.sim.ai/mcp', external: true },