Update CONTRIBUTING.md

Co-authored-by: David Barbet <[email protected]>

Author: maryamariyan

CONTRIBUTING.md

@@ -75,7 +75,7 @@ This section shows how to set up local Razor or Roslyn language servers for debu
 1. Clone the [Roslyn repository](https://github.com/dotnet/roslyn). This repository contains the Roslyn server implementation.
 2. Follow the build instructions provided in the repository.
 
-The server DLL is typically at `$roslynRepoRoot/artifacts/bin/Microsoft.CodeAnalysis.LanguageServer/Debug/net8.0/Microsoft.CodeAnalysis.LanguageServer.dll`, but this may vary based on the built configuration.
+The server DLL is typically at `$roslynRepoRoot/artifacts/bin/Microsoft.CodeAnalysis.LanguageServer/Debug/net7.0/Microsoft.CodeAnalysis.LanguageServer.dll`, but this may vary based on the built configuration.
 
 #### Razor