docs: update CONTRIBUTING.md for macOS installation instructions

[12138zhen]

What kind of change does this PR introduce?

Docs update: Add macOS installation instructions to the CONTRIBUTING.md file. Fixes #1685.

What is the current behavior?

The current CONTRIBUTING.md does not include specific installation instructions, which may lead to confusion during setup.

What is the new behavior?

This PR updates outdated instructions in the CONTRIBUTING.md file. ensuring a smoother setup experience for contributors.

[coveralls]

Pull Request Test Coverage Report for Build 12549157173

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 64.735%

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Totals
Change from base Build 12482434145:	0.0%
Covered Lines:	9742
Relevant Lines:	15049

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💛 - Coveralls