[fix] [broker] Fix typo in PersistentTopicsBase

[richiefanfan]

Motivation

Fix typo problem.

Modifications

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository:

[lhotari]

Thanks for the PR @richiefanfan! This is a good way to start Pulsar contributions!
There are tools such as https://github.com/crate-ci/typos which could scan the whole code base at once.
We shouldn't change typos in class names and method names in public APIs without first deprecating. Those should be handled separately case-by-case. All typos in log messages or exception messages could be batched together to fewer PRs.