feat: mixing up "little known" and "a little known"

[hippietrail]

Issues

N/A

Description

In a YouTube video I was listening to one of the participants said "it's a little known that ..." where it should just be "it's little known that ...".

I used my Google Ngrams Viewer tool to compare contexts and found that the opposite happens mostly with "it's little known fact that ..."

This linter removes the extraneous "a" in the first case and adds the missing "a" in the second case.

How Has This Been Tested?

cargo test

AI Disclosure

• I am a human and didn't use any AI.
• I used LLM features of my editor, but not an agent.
• I used an AI agent interactively.
• I am an agent or I got an agent to do the work autonomously.

If Your PR Implements or Enhances a Linter

• I made up the sentences in the unit tests.
• The sentences in the unit tests were generated by an AI.
• I'm using examples from the bug report / feature request.
• I collected real-world sentences for the unit tests.

Checklist

• I have performed a self-review of my own code
• I have added tests to cover my changes
• I have considered splitting this into smaller pull requests.