fix: channelService 的 approve 與 update 不應該使用箭頭函數

[kth-tw]

PULL REQUEST

說明 (Description)

ChannelService的approve與update是類別的method，不應該寫成箭頭函數

相關問題 (Linked Issues)

貢獻種類 (Type of change)

• Bug fix (除錯 non-breaking change which fixes an issue)
• New feature (增加新功能 non-breaking change which adds functionality)
• Breaking change (可能導致相容性問題 fix or feature that would cause existing functionality to not work as expected)
• Doc change (需要更新文件 this change requires a documentation update)

測試環境 (Test Configuration):

• OS:
• NodeJS Version:
• NPM Version:
• Docker Version:

檢查清單 (Checklist):

• 我的程式碼遵從此專案的規範 (My code follows the style guidelines of this project)
• 我有對於自己的程式碼進行測試檢查 (I have performed a self-review of my own code)
• 我有在程式碼中提供必要的註解 (I have commented my code, particularly in hard-to-understand areas)
• 我有在文件中進行必要的更動 (I have made corresponding changes to the documentation)
• 我的程式碼更動沒有顯著增加錯誤數量 (My changes generate no new warnings)
• 我有新增必要的單元測試 (I have added tests that prove my fix is effective or that my feature works)
• 我有檢查並更正程式碼錯誤的拼字 (I have checked my code and corrected any misspellings)

我已完成以上清單，並且同意遵守 Code of Conduct

I have completed the checklist and agree to abide by the code of conduct.

• 同意 (I consent)