Translate /assets/locales/ja.json in en (stopcovid19-okayama#3779)

translation completed for the source file '/assets/locales/ja.json'
on the 'en' language.

Co-authored-by: transifex-integration[bot] <43880903+transifex-integration[bot]@users.noreply.github.com>

assets/locales/en.json

@@ -434,6 +434,9 @@
   "※退院は、保健所から報告があり、確認ができているものを反映": "* Discharged only includes cases reported and verified by public health centers",
   "※死亡退院を含む": "※ including death discharges",
   "新型コロナウイルスの感染が判明した方へ": "To people found to be infected with coronavirus",
-  "（毎週金曜日に、前週木曜日から当該週水曜日までの件数を反映）": "(Tests conducted during the period between the previous Thursday to the current week's Wednesday are added each Friday)",
-  "※ ヤフーに蓄積された位置情報データなどを元に算出した参考値": "※ Figures are estimates calculated from aggregated location data collected by Yahoo! Japan"
+  "（毎週金曜日に、前週木曜日から当該週水曜日までの件数を反映）": "（Updated every Friday :Data from last Thursday to this Wednesday.）",
+  "※ ヤフーに蓄積された位置情報データなどを元に算出した参考値": "※ Figures are estimates calculated from aggregated location data collected by Yahoo! Japan",
+  "（注）「重症」は、集中治療室（ICU）等での管理又は人工呼吸器管理が必要な患者数を計上": "(Note) \"Severe symptoms\" is the number of patients who need management in an ICU or ventilator",
+  "東京都における滞在人口の増減": "Vary of staying population in Tokyo",
+  "ご家庭でのマスク等の捨て方": "How to dispose of masks and other waste at home"
 }