fix: fixed list of type in EXTRACTION_PROMPT_PART_1

[CostantinoEsposito89]

Description

Corrected the EXTRACTION_PROMPT_PART_1 prompt, the list of TextualMemoryMetadata types only accepts: iteral[‘procedure’, ‘fact’, ‘event’, “opinion”, “topic”, ‘reasoning’] | None.
The LLM must not generate anything else.
Summary: (summary)

Reviewer: @fridayL

Checklist:

• I have performed a self-review of my own code | 我已自行检查了自己的代码
• I have commented my code in hard-to-understand areas | 我已在难以理解的地方对代码进行了注释
• I have added tests that prove my fix is effective or that my feature works | 我已添加测试以证明我的修复有效或功能正常
• I have created related documentation issue/PR in MemOS-Docs (if applicable) | 我已在 MemOS-Docs 中创建了相关的文档 issue/PR（如果适用）
• I have linked the issue to this PR (if applicable) | 我已将 issue 链接到此 PR（如果适用）
• I have mentioned the person who will review this PR | 我已提及将审查此 PR 的人

[CaralHsi]

Hi, please resolve the conflicts. Thanks for your contribution:)