l10n(ja): update Japanese localization

Currently translated at 100.0% (148 of 148 strings)

Change-Id: I63647ba322e7dbf0d35613bec11c3fd133c5012a
Co-authored-by: Jun KOBAYASHI <Jun_KOBAYASHI@users.noreply.i18n.avm99963.com>
Translate-URL: https://i18n.avm99963.com/projects/tw-power-tools/extension-strings-json-format/ja/
Translation: TW Power Tools/Extension strings (JSON format)
diff --git a/src/static/_locales/ja/messages.json b/src/static/_locales/ja/messages.json
index c85c307..810f098 100644
--- a/src/static/_locales/ja/messages.json
+++ b/src/static/_locales/ja/messages.json
@@ -620,5 +620,9 @@
     "actionbadge_killswitch_enabled": {
         "message": "一部の機能は強制的に無効になっています。詳細については、クリックしてください。",
         "description": "Tooltip for the extension icon shown when a kill switch has been enabled."
+    },
+    "options_fixpekb269560789": {
+        "message": "CC の遅さとメモリ使用量の多さの暫定的な修正 (<a href='https://s.iavm.xyz/cc-running-slow-pekb'><code>pekb/269560789</code></a>)。",
+        "description": "Feature checkbox in the options page"
     }
 }