Update dotnet-core.yml

Author: EntityFX

.github/workflows/dotnet-core.yml

@@ -19,7 +19,7 @@ jobs:
         dotnet-version: 3.1.301
     - name: Install dependencies
       run: dotnet restore
-      working-directory: src/dotnet/
+      working-directory: src/dotnet/EntityFX.NetBenchmark
     - name: Build
       run: dotnet build --configuration Release --no-restore
       working-directory: src/dotnet/EntityFX.NetBenchmark