docs: Change 'grayscale release job' to 'grayscale release task'
Created by: patrickluoyu
Signed-off-by: Patrick-LuoYu patrickluo@yunify.com
What type of PR is this?
/kind documentation
What this PR does / why we need it:
Change 'grayscale release job' to 'grayscale release task'
Special notes for reviewers:
/assign @harrisonliu5
Please take a look. Thanks!
Does this PR introduce a user-facing change?
None