docs: Fix typo in cacheLife configs in use-cache docs (#71921)

### What?
Typo fix in use-cache docs

### Why?
The world deserves less typos

### How?
I removed a number that should not have been there

Co-authored-by: Delba de Oliveira <32464864+delbaoliveira@users.noreply.github.com>

Author: t3dotgg

docs/02-app/02-api-reference/01-directives/use-cache.mdx

@@ -160,7 +160,7 @@ const nextConfig = {
       biweekly: {
         stale: 60 * 60 * 24 * 14, // 14 days
         revalidate: 60 * 60 * 24, // 1 day
-        expire: 86400 60 * 60 * 24 * 14, // 14 days
+        expire: 60 * 60 * 24 * 14, // 14 days
       },
     },
   },