[PT] Handle numeric keyword arguments in "llietimo" template

[BoboTiG]

• Wiktionary page: https://pt.wiktionary.org/wiki/ardor

Wikicode:

{{llietimo|la|ardere|pt|4="queimar"}}

Output:

Do latim <i>ardere</i>.

Expected:

Do latim <i>ardere</i> (<i>"queimar"</i>).

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Model link, if any: https://pt.wiktionary.org/wiki/Predefini%C3%A7%C3%A3o:llietimo

Note: there also is a 5 kwarg.