watch cli parameter is now an array of service names instead of a bool flag

src/tye/Program.RunCommand.cs

@@ -3,11 +3,9 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
-using System.Collections.Generic;
 using System.CommandLine;
 using System.CommandLine.Invocation;
 using System.IO;
-using System.Linq;
 using System.Threading;
 using Microsoft.Tye.Hosting;
 
@@ -56,7 +54,7 @@ namespace Microsoft.Tye
                     {
                         Arity = ArgumentArity.ZeroOrMore,
                     },
-                    Description = "Wait for debugger attach to specific service. Specify \"*\" to wait for all services.",
+                    Description = $"Wait for debugger attach to specific service. Specify {ProcessRunnerOptions.AllServices} to wait for all services.",
                     Required = false
                 },
                 new Option("--docker")
@@ -71,7 +69,11 @@ namespace Microsoft.Tye
                 },
                 new Option("--watch")
                 {
-                    Description = "Watches for code changes for all dotnet projects.",
+                    Argument = new Argument<string[]>("service")
+                    {
+                        Arity = ArgumentArity.ZeroOrMore,
+                    },
+                    Description = $"Watches a specific dotnet service for code changes. Specify {ProcessRunnerOptions.AllServices} to watch for all dotnet services.",
                     Required = false
                 },
                 StandardOptions.Framework,