Update 19.snippet

Author: brunomoura-dev

snippets/19.snippet

@@ -2,13 +2,13 @@
 <CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
   <CodeSnippet Format="1.0.0">
     <Header>
-      <Title>ut (xUnit Test)</Title>
+      <Title>_ut (xUnit Test)</Title>
       <Author>Rusty Divine</Author>
       <Description>Unit Test Template with 3 Parts</Description>
       <HelpUrl>https://msdn.microsoft.com/en-us/library/ms165394.aspx</HelpUrl>
       <SnippetTypes />
       <Keywords />
-      <Shortcut>ut</Shortcut>
+      <Shortcut>_ut</Shortcut>
     </Header>
     <Snippet>
       <References />