Update zc-conformance.md
https://learn.microsoft.com/en-us/cpp/build/reference/zc-externconstexpr?view=msvc-170 says this flag is enabled by permissive- in VS 2017 15.6 and higher
@Alcaro : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.
Learn Build status updates of commit 9abe049:
:white_check_mark: Validation status: passed
| File | Status | Preview URL | Details |
|---|---|---|---|
| docs/build/reference/zc-conformance.md | :white_check_mark:Succeeded |
For more details, please refer to the build report.
@TylerMSFT
Can you review the proposed changes?
Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.
#label:"aq-pr-triaged" @MicrosoftDocs/public-repo-pr-review-team