Add Week 7R notes

[Chloezhu010]

Week 7R Verkle tree notes: https://ab9jvcjkej.feishu.cn/docx/C6VMdpDDHoRq2XxGmKicy0E3nng

[github-actions[bot]]

Hi @Chloezhu010,

Following typos were found in the pull request:

• 📄 ./docs/wiki/research/scaling/data-availability.md:
  1. eg

ℹ️ Here's how to fix them:

• Fix typos: Open the relevant files and fix any identified typos.
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• 🚧 Remember:
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