Add codeowners for documentation

[samjwu]

Relates to https://github.com/ROCm/ROCm/issues/2832 Adding documentation team as codeowners for documentation. Goal is to make this group of code owners reviewers when merging documentation changes.

Please note that this requires the team to be added as a role with Write permissions.

[samjwu]

Please remove the executable permissions from the codeowners file.

Fixed in latest.

Also, would someone with admin permissions to this repo be able to add the ROCm Documentation team with write permissions? GitHub flags the additions to the CODEOWNER file as an error otherwise. Thanks!

[eidenyoshida]

@samjwu I added the docs team with write privilege

can you also add the original code owners to all the docs files?