Fix mergify regex

[XuanYang-cn]

Signed-off-by: XuanYang-cn [email protected]

[longjiquan]

/lgtm /approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: longjiquan, XuanYang-cn

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• ~~OWNERS~~ [XuanYang-cn,longjiquan]

Approvers can indicate their approval by writing /approve in a comment Approvers can cancel approval by writing /approve cancel in a comment