fix(license.lua): correct license metadata lua processing

[mcanouil]

Correct the processing of license metadata to ensure proper handling of inline license elements.

The typo prevented from using license.text in template/partials/shortcodes when license: "my license" was used.

Note that version is not added to "text" for CC0 licenses because for some reason, the URL/parsing is created in TypeScript for this license.

---
format: html
license: "Whatever"
---

{{< meta license.text >}}

---
format: html
license: "CC BY"
---

{{< meta license.text >}}

---
format: html
license: "CC0"
---

{{< meta license.text >}}

[posit-snyk-bot]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues

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