Fix "docker-compose" call to be just "compose" (CanastaWiki#108)

Fixes CanastaWiki#106

cmd/add/add.go

@@ -56,7 +56,7 @@ func NewCmdCreate() *cobra.Command {
 	addCmd.Flags().StringVarP(&siteName, "site-name", "s", "", "Name of the new wiki site")
 	addCmd.Flags().StringVarP(&instance.Path, "path", "p", pwd, "Path to the new wiki")
 	addCmd.Flags().StringVarP(&instance.Id, "id", "i", "", "Canasta instance ID")
-	addCmd.Flags().StringVarP(&instance.Orchestrator, "orchestrator", "o", "docker-compose", "Orchestrator to use for installation")
+	addCmd.Flags().StringVarP(&instance.Orchestrator, "orchestrator", "o", "compose", "Orchestrator to use for installation")
 	addCmd.Flags().StringVarP(&databasePath, "database", "d", "", "Path to the existing database dump")
 	addCmd.Flags().StringVarP(&admin, "admin", "a", "", "Admin name of the new wiki")
 	addCmd.Flags().StringVar(&wikidbuser, "wikidbuser", "root", "The username of the wiki database user (default: \"root\")")