cosmetic change

group.go

@@ -50,11 +50,11 @@ func (e Error) Error() string { return string(e) }
 // It is typically returned on --version and --help requests that have been
 // served. It can and should be used for custom config phase situations where
 // the job of the application is done.
-const ErrBailEarlyRequest = Error("exit request from flag handler")
+const ErrBailEarlyRequest Error = "exit request from flag handler"
 
 // ErrRequestedShutdown can be used by Service implementations to gracefully
 // request a shutdown of the application. Group will then exit without errors.
-const ErrRequestedShutdown = Error("shutdown requested")
+const ErrRequestedShutdown Error = "shutdown requested"
 
 // FlagSet holds a pflag.FlagSet as well as an exported Name variable for
 // allowing improved help usage information.