docs: fix two syntax errors in JSDoc @example blocks

[patrickwehbe]

Problem

Two of the JSDoc @example snippets in lib/command.js are not valid JavaScript, so anyone copying them to try out the API hits a syntax error.

commandsGroup() example (was missing the closing quote, unterminated string):

program.commandsGroup('Development Commands:);

helpOption() example (was missing the comma between the two arguments):

program.helpOption('-?, --help' 'show help'); // customise

Both throw when run as-is. Checking each snippet with node --check:

SyntaxError: Invalid or unexpected token        // commandsGroup example
SyntaxError: missing ) after argument list      // helpOption example

Solution

Add the missing closing quote and the missing comma so both examples match the documented signatures and parse cleanly:

program.commandsGroup('Development Commands:');
program.helpOption('-?, --help', 'show help'); // customise

After the change, each snippet passes node --check, and npm test (lint, unit tests, and type checks) is green.

ChangeLog

Fixed two invalid JavaScript snippets in the JSDoc examples for .commandsGroup() and .helpOption().

[shadowspawn]

LGTM

[abetomo]

Good catch, thanks!