add link and message

resource/locales/en_US/admin/admin.json

@@ -204,6 +204,8 @@
     "import": "Import",
     "skip_username_and_email_when_overlapped": "Skip username and email using same username and email in new environment",
     "prepare_new_account_for_migration":"Prepare new account for migration",
+    "archive_data_import_detail":"More Details? Ckick here.",
+    "admin_archive_data_import_guide_url":"https://docs.growi.org/en/admin-guide/management-cookbook/import.html",
     "page_skip": "Pages with a name that already exists on GROWI are not imported",
     "Directory_hierarchy_tag": "Directory hierarchy tag"
   },

resource/locales/ja_JP/admin/admin.json

@@ -222,6 +222,8 @@
     "import": "インポート",
     "skip_username_and_email_when_overlapped": "ユーザー名またはメールアドレスが同じ場合、その部分がスキップされます。",
     "prepare_new_account_for_migration":"移行用のアカウントを新環境で用意してください。",
+    "archive_data_import_detail":"詳細はこちらからご確認することができます。",
+    "admin_archive_data_import_guide_url":"https://docs.growi.org/ja/admin-guide/management-cookbook/import.html#growi-%E3%82%A2%E3%83%BC%E3%82%AB%E3%82%A4%E3%83%96%E3%83%87%E3%83%BC%E3%82%BF%E3%82%A4%E3%83%B3%E3%83%9D%E3%83%BC%E3%83%88",
     "page_skip": "既に GROWI 側に同名のページが存在する場合、そのページはスキップされます",
     "Directory_hierarchy_tag": "ディレクトリ階層タグ"
   },

resource/locales/zh_CN/admin/admin.json

@@ -220,6 +220,8 @@
     "import": "Import",
     "skip_username_and_email_when_overlapped": "Skip username and email using same username and email in new environment",
     "prepare_new_account_for_migration":"Prepare new account for migration",
+    "archive_data_import_detail":"More details? Click here.",
+    "admin_archive_data_import_guide_url":"https://docs.growi.org/en/admin-guide/management-cookbook/import.html",
 		"page_skip": "Pages with a name that already exists on GROWI are not imported",
 		"Directory_hierarchy_tag": "Directory hierarchy tag"
 	},

src/client/js/components/Admin/ImportData/GrowiArchiveSection.jsx

@@ -104,6 +104,14 @@ class GrowiArchiveSection extends React.Component {
           <ul>
             <li>{t('admin:importer_management.skip_username_and_email_when_overlapped')}</li>
             <li>{t('admin:importer_management.prepare_new_account_for_migration')}</li>
+            <li>
+              <a
+                href={`${t('admin:importer_management.admin_archive_data_import_guide_url')}`}
+                target="_blank"
+                rel="noopener noreferrer"
+              >{t('admin:importer_management.archive_data_import_detail')}
+              </a>
+            </li>
           </ul>
         </div>
       </Fragment>