Refactor sutName to SutName for naming consistency

Renamed the constant sutName to SutName in HelpCommandTests
to follow .NET PascalCase naming conventions for constants.
Updated all references to use the new name for consistency.

Author: Bertk

test/coverlet.MTP.validation.tests/HelpCommandTests.cs

@@ -22,7 +22,7 @@ public class HelpCommandTests
   private const string PropsFileName = "MTPTest.props";
   private string[] _testProjectTfms = [];
   private static readonly string s_projectName = "coverlet.MTP.validation.tests";
-  private const string sutName = "BasicTestProject";
+  private const string SutName = "BasicTestProject";
   private readonly string _projectOutputPath = TestUtils.GetTestBinaryPath(s_projectName);
   private readonly string _testProjectPath;
   private readonly string _repoRoot ;
@@ -84,7 +84,7 @@ private void CreateDeterministicTestPropsFile()
                 new XElement("PropertyGroup",
                     new XElement("coverletMTPVersion", GetPackageVersion("*MTP*.nupkg")))));
 
-    string csprojPath = Path.Combine(_testProjectPath, sutName + ".csproj");
+    string csprojPath = Path.Combine(_testProjectPath, SutName + ".csproj");
     XElement csproj = XElement.Load(csprojPath)!;
 
     // Use only the first top-level PropertyGroup in the project file
@@ -480,7 +480,7 @@ private void VerifyCoverletMtpDeployed()
 
   private string GetSUTBinaryPath()
   {
-    string binTestProjectPath = Path.Combine(_repoRoot, "artifacts", "bin", sutName);
+    string binTestProjectPath = Path.Combine(_repoRoot, "artifacts", "bin", SutName);
     string binPath = Path.Combine(binTestProjectPath, _buildConfiguration);
     return binPath;
   }
@@ -538,7 +538,7 @@ private async Task<int> BuildProject(string projectPath)
 
   private async Task<TestResult> RunTestsWithHelp()
   {
-    string testExecutable = Path.Combine(GetSUTBinaryPath(), sutName + ".dll");
+    string testExecutable = Path.Combine(GetSUTBinaryPath(), SutName + ".dll");
 
     var processStartInfo = new ProcessStartInfo
     {
@@ -569,7 +569,7 @@ private async Task<TestResult> RunTestsWithHelp()
 
   private async Task<TestResult> RunTestsWithInfo()
   {
-    string testExecutable = Path.Combine(GetSUTBinaryPath(), sutName + ".dll");
+    string testExecutable = Path.Combine(GetSUTBinaryPath(), SutName + ".dll");
 
     var processStartInfo = new ProcessStartInfo
     {