pre-commit: auto add table of contents with doctoc

[jbampton]

https://github.com/thlorenz/doctoc?tab=readme-ov-file#usage-as-a-git-hook

https://github.com/thlorenz/doctoc/releases/tag/v2.2.0

Generates table of contents for Markdown files inside local git repository.

Links are compatible with anchors generated by github or other sites.

Added TOC to 3 Markdown files.

Never have to create a TOC again just run: pre-commit run doctoc --all-files

• CONTRIBUTING.md
• INSTALL.md
• README.md

So both Apache Airflow and Apache Sedona use doctoc:

https://github.com/apache/airflow/blob/eb4a8bc03c92d84e8238dcd76becb267ec8c3dd5/.pre-commit-config.yaml#L32

https://github.com/apache/sedona/blob/b0d86fda010e42f30b090aef1b2dbf06aa0a19d2/.pre-commit-config.yaml#L34

Description

This PR...

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 17.39%. Comparing base (8eb6ddd) to head (c4bf0bf).
⚠️ Report is 83 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #11679      +/-   ##
============================================
- Coverage     17.39%   17.39%   -0.01%     
+ Complexity    15285    15281       -4     
============================================
  Files          5889     5889              
  Lines        526183   526183              
  Branches      64242    64242              
============================================
- Hits          91542    91532      -10     
- Misses       424297   424307      +10     
  Partials      10344    10344              

Flag	Coverage Δ
uitests	3.62% <ø> (ø)
unittests	18.44% <ø> (-0.01%)	⬇️

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[vishesh92]

lgtm

[Copilot]

Pull Request Overview

This PR adds automatic table of contents (TOC) generation for Markdown files using the doctoc pre-commit hook. The change aims to keep documentation organized with automatically maintained TOCs that are compatible with GitHub anchor links.

• Added doctoc pre-commit hook configured to run on CONTRIBUTING.md, INSTALL.md, and README.md
• Generated initial TOCs for the three target Markdown files with proper doctoc comment markers

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
.pre-commit-config.yaml	Added doctoc hook configuration to auto-generate TOCs for specific Markdown files
README.md	Added auto-generated table of contents with doctoc markers
INSTALL.md	Added auto-generated table of contents with doctoc markers
CONTRIBUTING.md	Added auto-generated table of contents with doctoc markers

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[github-actions]

This pull request has merge conflicts. Dear author, please fix the conflicts and sync your branch with the base branch.