fix hotkey unavailable text

Author: jjw24

Flow.Launcher/HotkeyControl.xaml

@@ -10,7 +10,7 @@
     <Grid>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="150" />
-            <ColumnDefinition Width="120" />
+            <ColumnDefinition Width="125" />
         </Grid.ColumnDefinitions>
         <TextBox x:Name="tbHotkey" TabIndex="100" VerticalContentAlignment="Center" Grid.Column="0"
                  PreviewKeyDown="TbHotkey_OnPreviewKeyDown" input:InputMethod.IsInputMethodEnabled="False"/>

Flow.Launcher/Languages/en.xaml

@@ -139,7 +139,7 @@
     <system:String x:Key="update">Update</system:String>
 
     <!--Hotkey Control-->
-    <system:String x:Key="hotkeyUnavailable">Hotkey unavailable</system:String>
+    <system:String x:Key="hotkeyUnavailable">Hotkey Unavailable</system:String>
 
     <!--Crash Reporter-->
     <system:String x:Key="reportWindow_version">Version</system:String>