fix: Correct the MaxRetryTimes default value to 10

[xiaoxiaotank]

Description

The default value described in the comment for the MaxRetryTimes is 10, but the _maxRetryTimes is set 30 default, I think 10 is a properly value, so I correct the MaxRetryTimes default value to 10

public class BackgroundJobOptions
{
  private int _maxRetryTimes = 10;
}

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[zhenlei520]

LGTM