docs: Fix broken markdown syntax

[hattajr]

Description

Fix the broken markdown syntax that caused rendering problems on the documentation webpage.

Related Issue(s)

Documentation

[github-actions]

ACTION NEEDED

delta-rs follows the Conventional Commits specification for release automation.

The PR title and description are used as the merge commit message. Please update your PR title and description to match the specification.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.09%. Comparing base (af3102e) to head (a2c7fbc).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3134      +/-   ##
==========================================
+ Coverage   72.07%   72.09%   +0.02%     
==========================================
  Files         134      134              
  Lines       43362    43362              
  Branches    43362    43362              
==========================================
+ Hits        31252    31261       +9     
+ Misses      10087    10084       -3     
+ Partials     2023     2017       -6     

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