Update `Japanese` translation

Currently translated at 25.4% (146 of 573 strings)

Translation: Wiki-Bot/Discord
Translate-URL: https://translate.wikibot.de/projects/wiki-bot/discord/ja/

i18n/ja.json

@@ -134,7 +134,7 @@
         "main": "ディスカッション",
         "post": "ポスト",
         "tags": "タグ:",
-        "votes": "$1 票"
+        "votes": "$1 票 ($3%)"
     },
     "fallback": [
         "en",