Fix MASM dot-code and dot-data to indicate they also work on x64

[nir9]

Problem: Current documentation of .DATA and .CODE is confusing since it starts with a sentence that says 32 bit only which can lead to a misunderstanding that it is not supported in x64

[prmerger-automator]

@nir9 : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 807f208:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/assembler/masm/dot-code.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 07887f4:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/assembler/masm/dot-code.md	✅Succeeded
docs/assembler/masm/dot-data.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[v-dirichards]

@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

[TylerMSFT]

Thank you for improving the clarity.

[TylerMSFT]

#sign-off