Allow hide reward comment by config.

[Feiju12138]

PR Checklist

• The commit message follows guidelines for NexT.
• The changes have been tested (for bug fixes / features).
• Docs in NexT website have been added / updated (for features).

PR Type

• Bugfix.
• Feature.
• Improvement.
• Code style update (formatting, linting).
• Refactoring (no functional changes).
• Documentation.
• Translation.
• Other... Please describe:

What is the current behavior?

Issue resolved: Allow hide reward comment by config.

What is the new behavior?

• Screenshots with this changes:

Before:

After:

How to use?

In NexT _config.yml:

reward_settings:
  comment:
    enable: true

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[github-actions]

This pull request contains changes to the configuration file. Please make sure the documentation in NexT website is changed or added.
Please edit relevant source files here: https://github.com/next-theme/theme-next-docs/tree/master/source/docs and create a pull request with the changes here: https://github.com/next-theme/theme-next-docs/pulls

[Feiju12138]

我重新合并一下，之前的提交不是用当前Github账户提交的