[fix] Fix some typos in the project

[psxjoy]

While working with the project, I noticed a few spelling errors.
Would anyone be up for submitting a PR?
If not, I’ll find some time to handle it.

[psxjoy]

I believe this should be marked as a good first issue,
so any developer interested in contributing can collaborate on resolving it.

[wtt40122]

I believe this should be marked as a good first issue,我相信这应该被标记为一个good first issue ， so any developer interested in contributing can collaborate on resolving it.因此任何有兴趣做出贡献的开发人员都可以合作解决这个问题。

Can you give some examples

[psxjoy]

I believe this should be marked as a good first issue,我相信这应该被标记为一个good first issue ， so any developer interested in contributing can collaborate on resolving it.因此任何有兴趣做出贡献的开发人员都可以合作解决这个问题。

Can you give some examples

Just a example, in this class ozhera-app/app-server/src/main/java/org/apache/ozhera/app/config/DataSourceConfig.java,we have a method

    private void setDatasouce(ComboPooledDataSource dataSource) {
        dataSource.setTestConnectionOnCheckin(true);
        dataSource.setTestConnectionOnCheckout(false);
        dataSource.setPreferredTestQuery("select 1");
        dataSource.setIdleConnectionTestPeriod(180);
    }

maybe we can fix setDatasouce to setDatasource？
It is a little typo mistake, but for beginners，I think maybe a good chance join the ozhera's contribution.