docs(llms-txt): remove the "Nuxt config (nuxt-llms)" links entry from the LLMs.txt page

[IgorShevchik]

Context

The LLMs.txt getting-started page
(source: docs/content/docs/1.getting-started/7.ai/2.llms-txt.md)
carries a links: entry in its frontmatter that points at the internal Nuxt config:

links:
  - label: Nuxt config (nuxt-llms)
    iconName: GitHubIcon
    to: https://github.com/bitrix24/b24jssdk/blob/main/docs/nuxt.config.ts

This is the page's only links: entry, and it points at an internal build-config file rather than anything
reader-facing. The page is an end-user guide (how to use /llms.txt with Cursor, Windsurf, ChatGPT, Claude,
etc.), so a deep-link to nuxt.config.ts adds noise without helping the reader. (For contrast, the sibling
1.skills.md links: block points at skills/ and
AGENTS.md — genuinely relevant targets.)

Change

• Remove the entire links: block (frontmatter lines 5–8 of 2.llms-txt.md) — since the Nuxt-config entry
  is the only item, drop the whole links: key rather than leaving it empty.
• Sanity-check the page still renders (no header-links rail expected on this page afterwards).

RU version

• Apply the same removal to the RU documentation version of this page. This repo is English-only (per
  AGENTS.md), so the RU docs are a separate surface — hand the equivalent edit to whoever maintains
  them so the two stay in sync.

Related

• Page source: docs/content/docs/1.getting-started/7.ai/2.llms-txt.md
• Frontmatter conventions: .github/contributing/documentation.md