Fix regular expression for RFC 5646 (regression from #3604) (#4133)

app/javascript/mastodon/locales/ja.json

@@ -18,6 +18,12 @@
   "account.unfollow": "フォロー解除",
   "account.unmute": "ミュート解除",
   "boost_modal.combo": "次からは{combo}を押せば、これをスキップできます。",
+  "bundle_column_error.body": "Something went wrong while loading this component.",
+  "bundle_column_error.retry": "Try again",
+  "bundle_column_error.title": "Network error",
+  "bundle_modal_error.close": "Close",
+  "bundle_modal_error.message": "Something went wrong while loading this component.",
+  "bundle_modal_error.retry": "Try again",
   "column.blocks": "ブロックしたユーザー",
   "column.community": "ローカルタイムライン",
   "column.favourites": "お気に入り",
@@ -136,7 +142,6 @@
   "privacy.unlisted.long": "公開TLで表示しない",
   "privacy.unlisted.short": "未収載",
   "reply_indicator.cancel": "キャンセル",
-  "report.heading": "新規通報",
   "report.placeholder": "コメント",
   "report.submit": "通報する",
   "report.target": "問題のユーザー",