Update check-stack.md

[RatinCN]

#pragma check_stack( ) and #pragma check_stack will make stack checking reverts to the behavior specified on the command line, so if /Gs presents in command line, stack checking is turn on, otherwise it's turn off.

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[Court72]

@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.

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[TylerMSFT]

Hi @RatinCN , thank you for taking the time to point this out. I spent time looking at the assembly for different combinations of this flag, and talked to the dev team about it, and I'm going to close this PR because the behavior doesn't line up. In fact, for clarity's sake, one shouldn't use this pragma without arguments.
I've opened PR#5769 to update this topic. Thanks for raising this. It was interesting to dig through the generated code for the various combinations of this flag.