[BUG]minio examples are still in old group

[tianyue86]

Describe the bug
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To Reproduce
Steps to reproduce the behavior:

1. Check minio OpsRequest yaml under examples

apiVersion: apps.kubeblocks.io/v1alpha1
kind: OpsRequest
metadata:
  name: minio-restart

2. Apply this yaml to restart minio cluster:
   error: resource mapping not found for name: "minio-restart" namespace: "default" from "rsmno.yaml": no matches for kind "OpsRequest" in version "apps.kubeblocks.io/v1alpha1"

The correct example:

apiVersion: operations.kubeblocks.io/v1alpha1
kind: OpsRequest
metadata:
  name: pg-restart

Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Additional context
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[tianyue86]

Except for pg, other engine examples basically have the same problem, please change them together.

[shanshanying]

Got it. Will update the examples this week.