[Feature] Add a new tool link in Devtools category

[joyfinder]

Description

Another useful tools I have been using for few years as a developer is HackMD.

Hope it would benefit users in the community.

Screenshots

Checklist

• I have checked the existing issues
• I have read the Contributing Guidelines
• I am willing to work on this issue (optional)

[github-actions]

#2528 is already opened by you
As per contributing guidelines, you can only work on 1 issue at a time.

[github-actions]

Hello joyfinder!
Thank you for raising this issue! 😊 Your contribution is valuable to us! 😊

Please make sure to follow our Contributing Guidelines. 💪🏻

Please only work on an issue if you're assigned; otherwise, the PR will be automatically closed.
Our review team will carefully assess the issue and reach out to you soon! 😇
We appreciate your patience!

[joyfinder]

@rupali-codes

Would you please assign this issue to me?

Thank you.

[vp007-dev]

Are you still working on this? If not can i do it? No worries if u are working on this issue

[joyfinder]

Are you still working on this? If not can i do it? No worries if u are working on this issue

@vp007-dev

Already completed, and waiting for merge.

Thanks for asking.

[vp007-dev]

Are you still working on this? If not can i do it? No worries if u are working on this issue

@vp007-dev

Already completed, and waiting for merge.

Thanks for asking.

oh no worries its just that your PR doesnt mention this issue (:

[github-actions]

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