Fix CI cache path

Author: ypresto

.github/workflows/github-pages.yaml

@@ -49,7 +49,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: |
-            .next/cache
+            example/.next/cache
           # Generate a new cache whenever packages or source files change.
           key: ${{ runner.os }}-nextjs-${{ hashFiles('**/pnpm-lock.yaml') }}-${{ hashFiles('**.[jt]s', '**.[jt]sx') }}
           # If source files changed but packages didn't, rebuild from a prior cache.