Apply suggestions from code review

Co-authored-by: DeVere Dyett <[email protected]>

Author: peombwa

src/Authentication/Authentication/Cmdlets/ConnectMgGraph.cs

@@ -63,7 +63,7 @@ public class ConnectMgGraph : PSCmdlet, IModuleAssemblyInitializer, IModuleAssem
         public ContextScope ContextScope { get; set; }
 
         [Parameter(Mandatory = false,
-            HelpMessage = "The name of the national cloud environment to connect to. By default, the SDK uses global cloud.")]
+            HelpMessage = "The name of the national cloud environment to connect to. By default global cloud is used.")]
         [ValidateNotNullOrEmpty]
         [Alias("EnvironmentName", "NationalCloud")]
         public string Environment { get; set; }

src/Authentication/Authentication/Interfaces/IDataStore.cs

@@ -95,7 +95,7 @@ public interface IDataStore
         void EmptyDirectory(string dirPath);
 
         /// <summary>
-        /// Checks for existence of the given directory.
+        /// Checks for the existence of the given directory.
         /// </summary>
         /// <param name="path">The directory path to check.</param>
         /// <returns>True if the directory exists, otherwise false.</returns>

src/Authentication/Authentication/Interfaces/IFileProvider.cs

@@ -6,6 +6,7 @@ namespace Microsoft.Graph.PowerShell.Authentication
 {
     using System;
     using System.IO;
+
     public interface IFileProvider : IDisposable
     {
         string FilePath { get; }