fix comments

Author: azdevxps

documentation/Using-Azure-TestFramework.md

@@ -43,7 +43,7 @@ This cmdlet, located in Repo-Tasks, will allow you to create a credentials file
 
 #### Create New Service Principal
 
-Using a Service Principal is the preferred option for recording test because it works with both .NET Framework and .NET Core.  In order to create a new Service Principal run this command with a unused ServicePrincipal display name:
+Using a Service Principal is the preferred option for recording tests because it works with both .NET Framework and .NET Core.  In order to create a new Service Principal run this command with a unused ServicePrincipal display name:
 
 ```powershell
 New-TestCredential -ServicePrincipalDisplayName "ScenarioTestCredentials" -ServicePrincipalSecret `

src/ResourceManager/Common/Commands.ScenarioTests.ResourceManager.Common/EnvironmentSetupHelper.cs

@@ -90,7 +90,7 @@ public EnvironmentSetupHelper()
             // Set RunningMocked
             TestMockSupport.RunningMocked = HttpMockServer.GetCurrentMode() == HttpRecorderMode.Playback;
 
-            if (File.Exists(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) + "/.azure/testcredentials.json"))
+            if (File.Exists(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".azure", "testcredentials.json")))
             {
                 SetEnvironmentVariableFromCredentialFile();
             }
@@ -202,7 +202,7 @@ public void SetupEnvironment(AzureModule mode)
 
         public void SetEnvironmentVariableFromCredentialFile()
         {
-            var filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".azure/testcredentials.json");
+            var filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".azure", "testcredentials.json");
             Dictionary<string, object> credentials;
             using (StreamReader r = new StreamReader(filePath))
             {