update text

en.json

@@ -206,7 +206,7 @@
   "settings_syncplans_notice": "Sync plans history exported.",
   "settings_delsyncplans": "Delete Sync Plans History In DB",
   "settings_delsyncplans_desc": "Delete sync plans history in DB.",
-  "settings_delsyncplans_button": "Delete History",
+  "settings_delsyncplans_button": "Delete Sync Plans History",
   "settings_delsyncplans_notice": "Sync plans history (in DB) deleted.",
   "settings_delsyncmap": "delete sync mappings history in DB",
   "settings_delsyncmap_desc": "Sync mappings history stores the actual LOCAL last modified time of the REMOTE objects. Clearing it may cause unnecessary data exchanges in next-time sync. Click the button to delete sync mappings history in DB.",

zh_cn.json

@@ -206,7 +206,7 @@
   "settings_syncplans_notice": "同步计划已导出",
   "settings_delsyncplans": "删除数据库里的同步计划历史",
   "settings_delsyncplans_desc": "删除数据库里的同步计划历史。",
-  "settings_delsyncplans_button": "删除历史",
+  "settings_delsyncplans_button": "删除同步计划历史",
   "settings_delsyncplans_notice": "（数据库里的）同步计划已被删除。",
   "settings_delsyncmap": "删除数据库里的同步映射历史",
   "settings_delsyncmap_desc": "同步映射历史存储了本地真正的最后修改时间和远程文件时间的映射。删除之可能会导致下一次同步时发生不必要的数据交换。点击按钮删除数据库里的同步映射历史。",

zh_tw.json

@@ -206,7 +206,7 @@
   "settings_syncplans_notice": "同步計劃已匯出",
   "settings_delsyncplans": "刪除資料庫裡的同步計劃歷史",
   "settings_delsyncplans_desc": "刪除資料庫裡的同步計劃歷史。",
-  "settings_delsyncplans_button": "刪除歷史",
+  "settings_delsyncplans_button": "刪除同步計劃歷史",
   "settings_delsyncplans_notice": "（資料庫裡的）同步計劃已被刪除。",
   "settings_delsyncmap": "刪除資料庫裡的同步對映歷史",
   "settings_delsyncmap_desc": "同步對映歷史儲存了本地真正的最後修改時間和遠端檔案時間的對映。刪除之可能會導致下一次同步時發生不必要的資料交換。點選按鈕刪除資料庫裡的同步對映歷史。",