fix (translations): correct typos in translation keys

custom_components/tuya_local/translations/cz.json

@@ -957,7 +957,7 @@
                     "unformatted": "Neformátováno",
                     "failed": "Selhalo",
                     "replying": "Odpovídání",
-                    "platback": "Přehrávání",
+                    "playback": "Přehrávání",
                     "maintenance_required": "Vyžadována údržba",
                     "dry": "Suchý",
                     "comfortable": "Pohodlný",

custom_components/tuya_local/translations/ja.json

@@ -957,7 +957,7 @@
                     "unformatted": "未フォーマット",
                     "failed": "失敗",
                     "replying": "返信中",
-                    "playnack": "再生",
+                    "playback": "再生",
                     "maintenance_required": "メンテナンス必要",
                     "dry": "乾燥",
                     "comfortable": "快適",