Update astro.config.mjs

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: clairekinde11

astro.config.mjs

@@ -57,7 +57,7 @@ export default defineConfig({
       "/design/brand/apply-branding-for-an-organization/",
     "/developer-tools/guides/deploy-on-vercel/kinde.com/":
       "/developer-tools/guides/deploy-on-vercel/",
-    "design/pages/set-language-for-pages/":
+    "/design/pages/set-language-for-pages/":
       "/design/content-customization/set-language-for-pages/"
   },
   markdown: {