Fix quicksort doc

[varopxndx]

Describe your change:

I fixed the quicksort documentation following the markdown best practices.

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[chakeson]

This is the same as #4875 fyi

[varopxndx]

Hi @chakeson
I just added another documentation to avoid problems with another partner.
I hope this works.
Thank you!

[chakeson]

The binary traversal document is literally taken from https://github.com/azl397985856/leetcode/blob/master/thinkings/binary-tree-traversal.en.md while its in the creative common it should probably be mentioned.

[varopxndx]

The binary traversal document is literally taken from https://github.com/azl397985856/leetcode/blob/master/thinkings/binary-tree-traversal.en.md while its in the creative common it should probably be mentioned.

Yes, it's well explained there, I used it to review docs from there.
I just added the link to the reference.
Sorry for omitted it.
I hope this works.
Thank you!

[varopxndx]

Hi @chakeson
Will my contribution be accepted?

[chakeson]

I'm not a maintainer, I just try reviewed to help. They probably wont prioritise something with a spam looking pl.

[poyea]

The binary traversal document is literally taken from https://github.com/azl397985856/leetcode/blob/master/thinkings/binary-tree-traversal.en.md while its in the creative common it should probably be mentioned.

I don't suggest copy-paste from other repos.

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.