Updated to Cofoundry v0.5 release

Author: HeyJoel

src/Cofoundry.Plugins.SiteMap/Cofoundry.Plugins.SiteMap.csproj

@@ -23,7 +23,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Cofoundry.Domain" Version="0.5.0-beta0026" />
+    <PackageReference Include="Cofoundry.Domain" Version="0.5.0" />
   </ItemGroup>
 
 </Project>