アイヌ語追加 (#428) (#433)

Reviewed-on: #433
Co-authored-by: miteruzo <miteruzo@naver.com>

frontend/src/components/common/Pagination.test.tsx

@@ -13,11 +13,11 @@ describe ('Pagination', () => {
 
     expect (screen.getByLabelText ('前のページ')).toHaveAttribute (
         'href',
-        '/posts?tags=abc&page=2',
+        '/ja/posts?tags=abc&page=2',
     )
     expect (screen.getByLabelText ('次のページ')).toHaveAttribute (
         'href',
-        '/posts?tags=abc&page=4',
+        '/ja/posts?tags=abc&page=4',
     )
     expect (screen.getByText ('3')).toHaveAttribute ('aria-current', 'page')
   })
@@ -33,6 +33,6 @@ describe ('Pagination', () => {
 
     rerender (<Pagination page={1} totalPages={2}/>)
 
-    expect (screen.getByLabelText ('次のページ')).toHaveAttribute ('href', '/tags?page=2')
+    expect (screen.getByLabelText ('次のページ')).toHaveAttribute ('href', '/ja/tags?page=2')
   })
 })