Bump ex_doc from 0.38.4 to 0.40.1

[dependabot]

Bumps ex_doc from 0.38.4 to 0.40.1.

Changelog

Sourced from ex_doc's changelog.

v0.40.1 (2026-01-31)

• Enhancements

  • Remove link to source from generated .md files
  • Improve word-breaking of module names and sizing of main page titles
  • Include description in llms.txt

• Bug fixes

  • Fix headers in custom groups

v0.40.0 (2026-01-20)

• Enhancements

  • Introduce Markdown formatter (thanks to Yordis Prietro)
  • Generate a llms.txt document by default and add a "Copy Markdown" button to the top of every page
  • Run retriever only once per formatter
  • Support anchors on redirects

• Bug fixes

  • Copy button on erl and iex snippets now include prompts
  • Fix headers having wrong selectors due to whitespace minification
  • Only include .html links on Swup

• Breaking changes

  • Revamp the ExDoc entrypoint and formatter API. While those have never been made public, others may have relied on it. We have now changed and documented them on the path to standardization
  • The previously deprecated :assets option will raise if given a string, pass a map instead

v0.39.3 (2025-12-09)

• Enhancements
  • Add the option to trim down the footer

v0.39.2 (2025-12-04)

• Bug fixes
  • Do not strip hrefs on summaries
  • Show go to latest for prereleases
  • Prevent fake italic in autocomplete text
  • Rename "Search Hexdocs" link to "Go to package docs"

v0.39.1 (2025-10-23)

• Bug fixes
  • Improve box-shadow around autocompletion
  • Trim search engine selector on small screens
  • Fix admonition titles on small screens

v0.39.0 (2025-10-23)

• Enhancements

... (truncated)

Commits

• 20a355b Release v0.40.1
• 7a71ddf Update assets
• f44f6fe Turn whitespace minification back on
• 3802867 Improve distinction between docstring headings (H2-H4)
• e8a46c6 Change headings' levels to match their context
• 9cd866c Fix Summary Types heading size
• e8e74ee More word break tests
• 21ec71f Update assets
• 8611a16 Improve word-breaking of module names and sizing of main page titles (#2190)
• 1b1fe51 Bump lodash from 4.17.21 to 4.17.23 in /assets (#2187)
• Additional commits viewable in compare view

[ericmj]

@dependabot rebase