Update admin-api-non-persistent-topics.md (#3914)
Update admin-api-non-persistent-topics.md (#3914)

### Motivation
The original topic name structure is incorrect. I correct the topic name structure.

### Modifications
Refine topic name structure as "non-persistent://tenant/namespace/topic".
yahoo/pulsar,merlimat/pulsar,yahoo/pulsar,merlimat/pulsar,merlimat/pulsar,massakam/pulsar,massakam/pulsar,yahoo/pulsar,yahoo/pulsar,massakam/pulsar,yahoo/pulsar,massakam/pulsar,massakam/pulsar,merlimat/pulsar,merlimat/pulsar,merlimat/pulsar,massakam/pulsar,yahoo/pulsar