private TextTable createTextTable(CommandLine.Help help) {
			CommandSpec spec = help.commandSpec();
			// prepare layout: two columns
			// the left column overflows, the right column wraps if text is too long
			int commandLength = maxLength(spec.subcommands(), 37);
			TextTable textTable = TextTable.forColumns(help.colorScheme(),
					new CommandLine.Help.Column(commandLength + 2, 2, SPAN),
					new CommandLine.Help.Column(spec.usageMessage().width() - (commandLength + 2), 2, WRAP));
			textTable.setAdjustLineBreaksForWideCJKCharacters(
					spec.usageMessage().adjustLineBreaksForWideCJKCharacters());
			return textTable;
		}
validate all commands in Help is covered by section and each section command
exist in help.

@param help
src/main/java/dev/jbang/cli/JBang.java