Improve language strings.

Author: Jack251970

src/Flow.Launcher.Plugin.ClipboardPlus/Languages/en.xaml

@@ -31,7 +31,7 @@
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_unpin_subtitle">Clear unpinned records in both list and database</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_unpin_msg_subtitle">Clear {0} unpinned records in both list and database!</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_title">Clear invalid records</system:String>
-    <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_subtitle">Clear invalid records in both list and database</system:String>
+    <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_subtitle">Clear empty text, unexisting files and empty records in both list and database</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_msg_subtitle">Clear {0} invalid records in both list and database!</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_fail_msg_subtitle">There are no records that can be cleared!</system:String>
 

src/Flow.Launcher.Plugin.ClipboardPlus/Languages/zh-cn.xaml

@@ -31,7 +31,7 @@
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_unpin_subtitle">从列表和数据库清除所有未固定记录</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_unpin_msg_subtitle">从列表和数据库清除了{0}条未固定记录！</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_title">清除无效记录</system:String>
-    <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_subtitle">从列表和数据库清除所有无效记录</system:String>
+    <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_subtitle">从列表和数据库清除空文字，不存在的文件与空记录</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_msg_subtitle">从列表和数据库清除了{0}条无效记录！</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_fail_msg_subtitle">没有可清除的记录！</system:String>
 

src/Flow.Launcher.Plugin.ClipboardPlus/Languages/zh-tw.xaml

@@ -31,7 +31,7 @@
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_unpin_subtitle">從列錶和數據庫清除所有未固定記録</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_unpin_msg_subtitle">從列錶和數據庫清除瞭{0}條未固定記録！</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_title">清除無傚記録</system:String>
-    <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_subtitle">從列錶和數據庫清除所有無傚記録</system:String>
+    <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_subtitle">從列錶和數據庫清除空文字，不存在的文件與空記錄</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_invalid_msg_subtitle">從列錶和數據庫清除瞭{0}條無傚記録！</system:String>
     <system:String x:Key="flowlauncher_plugin_clipboardplus_clear_fail_msg_subtitle">沒有可清除的記録！</system:String>