Rework file resolution path

Author: captainsafia

src/Components/Blazor/Build/testassets/Directory.Build.props

@@ -3,7 +3,7 @@
 
     <PropertyGroup>
       <RepoRoot Condition="'$(RepoRoot)' ==''">$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), global.json))\</RepoRoot>
-      <ComponentsRoot>$(RepoRoot)src\Components\</ComponentsRoot>
+      <ComponentsRoot>$(RepoRoot)\src\Components\</ComponentsRoot>
       <BlazorBuildRoot>$(ComponentsRoot)Blazor\Build\src\</BlazorBuildRoot>
       <ReferenceBlazorBuildFromSourceProps>$(BlazorBuildRoot)ReferenceBlazorBuildFromSource.props</ReferenceBlazorBuildFromSourceProps>
 
@@ -16,7 +16,7 @@
 
     <Import Project="$(RepoRoot)eng\Versions.props" Condition="'$(HELIX_WORKITEM_ROOT)' == ''" />
     <Import Project="$(MSBuildThisFileDirectory)Versions.props" Condition="Exists('$(MSBuildThisFileDirectory)Versions.props')" />
-  
+
     <ItemGroup>
       <!-- Use the sample compiler \ SDK that the rest of our build uses-->
       <PackageReference Include="Microsoft.Net.Compilers.Toolset"