Small hotfix for sphinx compat

[timkpaine]

Description

Brief description of the changes in this PR.

Type of Change

• Bug fix
• New feature
• Documentation update
• Refactor / code cleanup
• CI / build configuration
• Other (describe below)

Checklist

• Linting passes (make lint)
• Tests pass (make test)
• New tests added for new functionality
• Documentation updated (if applicable)
• Changelog / version bump (if applicable)

[github-actions]

Test Results

83 tests  ±0   83 ✅ ±0   22s ⏱️ +6s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 9acdf40. ± Comparison against base commit 235d630.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 80.61%. Comparing base (235d630) to head (9acdf40).

Files with missing lines	Patch %	Lines
yardang/sphinx/llms.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #137      +/-   ##
==========================================
- Coverage   80.65%   80.61%   -0.05%     
==========================================
  Files          15       15              
  Lines        1892     1893       +1     
  Branches      203      203              
==========================================
  Hits         1526     1526              
- Misses        315      316       +1     
  Partials       51       51              

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.