style(changelog): comply with MD022 and fix minor typos

[kenji-miyake]

Description

Resolves #60

• Comply with MD022
• Fix minor typos

Motivation and Context

See #60.

How Has This Been Tested?

I checked with grep.

Screenshots / Output (if appropriate):

None

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #61 (90b3ec2) into main (e1da611) will increase coverage by 0.25%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #61      +/-   ##
==========================================
+ Coverage   40.90%   41.15%   +0.25%     
==========================================
  Files          13       13              
  Lines         824      824              
  Branches      215      215              
==========================================
+ Hits          337      339       +2     
+ Misses        378      374       -4     
- Partials      109      111       +2     

Impacted Files	Coverage Δ
git-cliff-core/src/repo.rs	29.17% <0.00%> (+2.09%)	⬆️

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[orhun]

LGTM!