(#147) Improve help description for command option

The help description for the IncludePrograms option on the list command
was confusing, as it didn't make clear what actually happens when you
use the --includeprograms option.

This commit attempts to address this by calling out that the output
changes when using this option to include the additional pieces of
software which appear in add/remove programs, which aren't already
managed by Chocolatey CLI.

src/chocolatey/infrastructure.app/commands/ChocolateyListCommand.cs

@@ -95,7 +95,7 @@ public virtual void ConfigureArgumentParser(OptionSet optionSet, ChocolateyConfi
                      "Prerelease - Include Prereleases? Defaults to false.",
                      option => configuration.Prerelease = option != null)
                 .Add("i|includeprograms|include-programs",
-                     "IncludePrograms - Filters out apps Chocolatey has listed as packages and includes those in the list. Defaults to false.",
+                     "IncludePrograms - Includes software from Programs and Features not being managed by Chocolatey CLI.",
                      option => configuration.ListCommand.IncludeRegistryPrograms = option != null)
                 .Add("version=",
                      "Version - Specific version of a package to return.",