Change master to main for GitHub links

[Rageking8]

Update GitHub links where the master branch is renamed to main. This prevents a branch not found redirect when visiting the link.

[learn-build-service-prod]

Learn Build status updates of commit f548599:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/assembler/arm/arm-assembler-command-line-reference.md	✅Succeeded
docs/build/reference/sourcelink.md	✅Succeeded
docs/linux/deploy-run-and-debug-your-linux-project.md	✅Succeeded
docs/overview/how-to-report-a-problem-with-the-visual-cpp-toolset.md	✅Succeeded
styleguide/template.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

[ttorble]

@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]

Love it! Thank you. I hope you have a relaxing and enjoyable holiday this month.

[TylerMSFT]

#sign-off

[Rageking8]

Love it! Thank you. I hope you have a relaxing and enjoyable holiday this month.

Same to you!