[docs] Sphinx v8 compatibility: configure a non-empty inventory name for Python Intersphinx mapping.

[jayaddison]

From Sphinx version 8.0 onwards, some legacy behaviours of the intersphinx_mapping configuration setting will be dropped, and validation of Intersphinx mapping names is being tightened to require non-empty mapping names.

Based on a code search on GitHub I discovered your project as one that is recently-maintained and has an intersphinx_mapping configuration containing an empty-string name entry. Because only a small number of source repositories are affected, I'm opening pull requests to offer corresponding configuration updates.

Note: I'm unfamiliar with the details of the libtmux documentation, so the extent of my testing has been:

• Install a minimal set of dependencies for the project.
• Disable the linkify_issues Sphinx extension since I couldn't initially find the origin for it.
• Build the project as HTML using Sphinx v7.4.7 (the latest and perhaps last pre-v8.x release).
• Confirmed that the documentation build succeeded.

[CLAassistant]

All committers have signed the CLA.

[tony]

@jayaddison You signed the CLA too. Perfect!

Smart, searching GitHub Search like that!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.54%. Comparing base (aa2965e) to head (3cfd878).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #542      +/-   ##
==========================================
+ Coverage   88.51%   88.54%   +0.02%     
==========================================
  Files          36       36              
  Lines        3927     3927              
  Branches      570      570              
==========================================
+ Hits         3476     3477       +1     
+ Misses        310      308       -2     
- Partials      141      142       +1     

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[jayaddison]

Thanks @tony!