FYI: Rename "master" branch to "main"

[udippant]

Hello everyone,

As part of the new guideline from The Facebook Open Source team, we are moving away from the the branch naming convention such as “master.” This is following a widely-accepted shift in the open source community to pivot open source repositories away from using harmful nomenclature.

Soon we will begin the process to rename the branch "master" to "main". We apologize if this breaks any of your workflow and request you to make necessary adjustments.

Thank you!