Correct vsix manifest spelling error

Author: Mathew Glodack

src/Crutch.Vsix/source.extension.vsixmanifest

@@ -3,7 +3,7 @@
   <Metadata>
     <Identity Id="Crutch..1e75b6ac-25be-48f3-b95e-d3cb4fe1830c" Version="0.0.1" Language="en-US" Publisher="Mathew Glodack"/>
     <DisplayName>Crutch</DisplayName>
-    <Description xml:space="preserve">This is my Visual Studio C# crutch. It conains code analyzers for specific code mistakes that I have made before.</Description>
+    <Description xml:space="preserve">This is my Visual Studio C# crutch. It contains code analyzers for specific code mistakes that I have made before.</Description>
   </Metadata>
   <Installation>
     <InstallationTarget Version="[14.0,]" Id="Microsoft.VisualStudio.Pro" />