docs: not found for docs link in CONTRIBUTING.md file

[arshamalh]

Hi, in CONTRIBUTING.md file, there is a link to the documentation and how to write a good one. but the link itself is broken.
I'll open another pull request with the correct link in it.

[m-golang]

Hi Mohammadreza! Just checking in, are you still planning to open a PR for this issue?

If not, I’d be happy to take it and submit a fix. This would actually be my first open source contribution, so I’d really appreciate the opportunity 👍

[arshamalh]

Hi, good to see your positive energy for open source contribution, but I committed the change at the same time of opening the issue.
Here's the commit:
arshamalh@e9fd4d7

So maybe another one ☺️

[m-golang]

Thanks for the quick update! I really appreciate it.
I’ll look for another issue to contribute to 😊