fix(site): make the docs and landing navbars identical (#25)

Co-authored-by: Alice <alice@prismshadow.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/docs/src/lib/strings-en.ts

@@ -3,7 +3,6 @@ import type { Strings } from "./strings";
 
 export const en: Strings = {
   siteName: "PenguinHarness",
-  docsBadge: "Docs",
 
   nav: {
     highlights: "Highlights",

packages/docs/src/lib/strings.ts

@@ -7,7 +7,6 @@
  */
 export const zh = {
   siteName: "PenguinHarness",
-  docsBadge: "Docs",
 
   nav: {
     // Landing-parity labels: the top bar mirrors the landing page's nav exactly