Add a header in BUILDING.md

[PoojaDurgad]

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

[codecov-io]

Codecov Report

Merging #35710 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@ Coverage Diff @@## master #35710 +/- ##
==========================================
+ Coverage 96.40% 96.41% +0.01% 
==========================================
Files 220 220 Lines 73675 73675 ==========================================
+ Hits 71025 71033 +8 + Misses 2650 2642 -8 

Impacted Files	Coverage Δ
lib/internal/modules/cjs/loader.js	95.03% <0.00%> (+0.64%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b18651b...21709aa. Read the comment docs.

[Trott]

The first commit message needs to be more descriptive. The subsequent commit message should be a "fixup" commit message or else squashed into the first. Otherwise, the bot will land it as a separate commit.

The content is might not be in the best place. It separates the macos firewall tool from Running Tests and those two things should go together. I think it's fine (better even?) for the install instructions to be located where they were before.

[Trott]

The first commit message needs to be more descriptive. The subsequent commit message should be a "fixup" commit message or else squashed into the first. Otherwise, the bot will land it as a separate commit.

Since the commit message needed only a small tweak, I rebased, squashed, and force-pushed. I hope I didn't mess up your workflow, and if I did, I apologize in advance!

[Trott]

The content is might not be in the best place. It separates the macos firewall tool from Running Tests and those two things should go together. I think it's fine (better even?) for the install instructions to be located where they were before.

Having second thoughts about my comment here. Maybe it's fine where it is. And if not, we can move it some other time. Sorry to leave a wall of comments and then walk back half of them.

[PoojaDurgad]

@Trott - no problem. thanks

[Trott]

Landed in 1ba932b