Try to fix publish action

Author: Chris Benard

.github/workflows/publish.yml

@@ -21,7 +21,7 @@ jobs:
         uses: rohith/publish-nuget@v2
         with:
           # Filepath of the project to be packaged, relative to root of repository
-          PROJECT_FILE_PATH: System.ServiceProcess/System.ServiceProcess.csproj
+          PROJECT_FILE_PATH: System.ServiceProcess.Core/System.ServiceProcess.Core.csproj
 
           # NuGet package id, used for version detection & defaults to project name
           PACKAGE_NAME: Core.System.ServiceProcess