(doc) Minor change to wording

Author: gep13

Source/GitReleaseManager.Cli/Options/BaseVcsSubOptions.cs

@@ -11,7 +11,7 @@ namespace GitReleaseManager.Cli.Options
 
     public abstract class BaseVcsOptions : BaseSubOptions
     {
-        internal const string OBSOLETE_MESSAGE = "Authentication using username and password have been deprecated, and will be removed in a future release. Please use --token instead!";
+        internal const string OBSOLETE_MESSAGE = "Authentication using username and password has been deprecated, and will be removed in a future release. Please use --token instead!";
 
         [Obsolete(OBSOLETE_MESSAGE)]
         [Option('u', "username", HelpText = "(DEPRECATED) The username to access Version Control System with.", Required = true, SetName = "Basic Auth")]
@@ -32,4 +32,4 @@ public abstract class BaseVcsOptions : BaseSubOptions
         [Option('r', "repository", HelpText = "The name of the repository.", Required = true)]
         public string RepositoryName { get; set; }
     }
-}
+}