fix(docs): update rdagent ui with correct params

[dexhunter]

Description

got error when running the example on README

$ rdagent ui --port 19899 --log-dir ./log --data_science True
Usage: rdagent ui [OPTIONS]
Try 'rdagent ui --help' for help.
╭─ Error ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ No such option: --data_science (Possible options: --data-science, --no-data-science)                                              │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

Screenshots of Test Results (if appropriate):

1. Your own tests:

Types of changes

• Fix bugs
• Add new feature
• Update documentation

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📚 Documentation preview 📚: https://RDAgent--1249.org.readthedocs.build/en/1249/

[SunsetWolf]

Hi, @dexhunter
Thank you for your attention and contributions to RD-Agent. You've made RD-Agent better. Thank you.