fix(docs): unblock Pages deploy — MDX autolink breaks the Docusaurus build

[gHashTag]

Problem

Deploy Website + Docs to GitHub Pages is failing on main (every run — 05:57, 07:06, …), so the site is not publishing at all. Pages Health Check fails as a consequence.

Root cause

The Docusaurus build aborts on the first MDX error:

Error: MDX compilation failed for file
  docs/docs/research/papers/ARXIV_SUBMISSION_CONFIRMATION.md
Cause: Unexpected character `/` (U+002F) before local name, expected a character
       that can start a name, such as a letter, `$`, or `_`
  line 62, column 41 · micromark-extension-mdx-jsx · unexpected-character

Line 62 used the markdown autolink form:

follow the standard procedure at <https://info.arxiv.org/help/submit/index.html>

MDX v3 parses <https… as the start of a JSX tag and chokes on the / in //. Plain Markdown allows this; MDX does not.

Fix

Replaced it with an ordinary markdown link. Verified by grep that this was the only occurrence of the <https://…> autolink pattern anywhere under docs/docs, so this should be the only instance of this class of failure.

follow the standard procedure at [info.arxiv.org/help/submit](https://info.arxiv.org/help/submit/index.html)

Scope

One line, documentation only — no code, no behaviour change. The other CI failures on this repo (e.g. zig build author-guard reporting "no build.zig file found") are pre-existing on main and unrelated to this change.

🤖 Generated with Claude Code