add Position Rest tool tip

Author: jjw24

Flow.Launcher/Languages/en.xaml

@@ -24,6 +24,7 @@
     <system:String x:Key="GameMode">Game Mode</system:String>
     <system:String x:Key="GameModeToolTip">Suspend the use of Hotkeys.</system:String>
     <system:String x:Key="PositionReset">Position Reset</system:String>
+    <system:String x:Key="PositionResetToolTip">Reset search window position</system:String>
 
     <!--  Setting General  -->
     <system:String x:Key="flowlauncher_settings">Flow Launcher Settings</system:String>

Flow.Launcher/MainWindow.xaml.cs

@@ -268,6 +268,7 @@ private void InitializeNotifyIcon()
             contextMenu.Items.Add(header);
             contextMenu.Items.Add(open);
             gamemode.ToolTip = InternationalizationManager.Instance.GetTranslation("GameModeToolTip");
+            positionreset.ToolTip = InternationalizationManager.Instance.GetTranslation("PositionResetToolTip");
             contextMenu.Items.Add(gamemode);
             contextMenu.Items.Add(positionreset);
             contextMenu.Items.Add(settings);