added 翻訳

index.html

             setTimeout(() => {
                 new google.translate.TranslateElement({
                     pageLanguage: 'ja',
-                    includedLanguages: 'en,ko,ru,vi,zh-CN,zh-TW',
+                    includedLanguages: 'en,ko,ru,vi,zh-CN,zh-TW,ja',
                     layout: google.translate.TranslateElement.InlineLayout.SIMPLE
                 }, 'google_translate_element');
             }, 5000);
             setTimeout(() => {
                 new google.translate.TranslateElement({
                     pageLanguage: 'ja',
-                    includedLanguages: 'en,ko,ru,vi,zh-CN,zh-TW',
+                    includedLanguages: 'en,ko,ru,vi,zh-CN,zh-TW,ja',
                     layout: google.translate.TranslateElement.InlineLayout.SIMPLE
                 }, 'google_translate_element1');
             }, 5000);