[mergebot] Update merge bot messages to explain flags (#82907)
## FORCE
@pytorchbot successfully started a merge job. Check the current status [here](None).
The merge job was triggered with the force (-f) flag. This means your change will be merged **immediately**, bypassing any CI checks (ETA: 1-5 minutes). If this is not the intended behavior, feel free to use some of the other merge options in the [wiki](https://github.com/pytorch/pytorch/wiki/Bot-commands).
Please reach out to the [PyTorch DevX Team](https://github.com/pytorch/pytorch/wiki/Dev-Infra-Office-Hours) with feedback or questions!
## GREEN
@pytorchbot successfully started a merge job. Check the current status [here](None).
The merge job was triggered with the green (-g) flag. This means that your change will be merged once all checks on your PR have passed (ETA: 0-4 Hours). If this is not the intended behavior, feel free to use some of the other merge options in the [wiki](https://github.com/pytorch/pytorch/wiki/Bot-commands).
Please reach out to the [PyTorch DevX Team](https://github.com/pytorch/pytorch/wiki/Dev-Infra-Office-Hours) with feedback or questions!
## LAND CHECKS
@pytorchbot successfully started a merge job. Check the current status [here](None).
The merge job was triggered with the land checks (-l) flag. If you did not specify this flag yourself, you are likely enrolled in the [land checks rollout](https://github.com/pytorch/test-infra/blob/main/torchci/lib/bot/rolloutUtils.ts#L1-L34). This means that your change will be merged once all checks on your PR and the land checks have passed (**ETA 4 Hours**). If you need to coordinate lands between different changes and cannot risk a land race, please add the `ciflow/trunk` label to your PR and wait for signal to complete, and then land your changes in proper order. Having `trunk`, `pull`, and `Lint` pre-run on a PR will bypass land checks and the ETA should be immediate. If this is not the intended behavior, feel free to use some of the other merge options in the [wiki](https://github.com/pytorch/pytorch/wiki/Bot-commands).
Please reach out to the [PyTorch DevX Team](https://github.com/pytorch/pytorch/wiki/Dev-Infra-Office-Hours) with feedback or questions!
## LAND CHECKS
@pytorchbot successfully started a merge job. Check the current status [here](None).
The merge job was triggered with the land checks (-l) flag. If you did not specify this flag yourself, you are likely enrolled in the [land checks rollout](https://github.com/pytorch/test-infra/blob/main/torchci/lib/bot/rolloutUtils.ts#L1-L34). This means that your change will be merged once all checks on your PR have passed since you have added the `ciflow/trunk` label to your PR (ETA 0-4 Hours). If this is not the intended behavior, feel free to use some of the other merge options in the [wiki](https://github.com/pytorch/pytorch/wiki/Bot-commands).
Please reach out to the [PyTorch DevX Team](https://github.com/pytorch/pytorch/wiki/Dev-Infra-Office-Hours) with feedback or questions!
## NORMAL
@pytorchbot successfully started a merge job. Check the current status [here](None).
The merge job was triggered without a flag. This means that your change will be merged once all checks on your PR have passed (ETA: 0-4 Hours). If this is not the intended behavior, feel free to use some of the other merge options in the [wiki](https://github.com/pytorch/pytorch/wiki/Bot-commands).
Please reach out to the [PyTorch DevX Team](https://github.com/pytorch/pytorch/wiki/Dev-Infra-Office-Hours) with feedback or questions!
## Revert Message
@pytorchbot successfully started a revert job. Check the current status [here](None).
Please reach out to the [PyTorch DevX Team](https://github.com/pytorch/pytorch/wiki/Dev-Infra-Office-Hours) with feedback or questions!
## TROUBLESHOOTING
If you believe this is an error, you can use the old behavior with `@pytorchbot merge -g` (optionally with the `ciflow/trunk` to get land checks) or use `@pytorchbot merge -f "some reason here"`. For more information, see the [bot wiki](https://github.com/pytorch/pytorch/wiki/Bot-commands).
Please reach out to the [PyTorch DevX Team](https://github.com/pytorch/pytorch/wiki/Dev-Infra-Office-Hours) with feedback or questions!
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82907
Approved by: https://github.com/huydhn, https://github.com/janeyx99