[DOCS] Readme "Learn more in the official documentation." goes to 404 page

Question

### Documentation Type

Broken links

### Documentation Location

https://github.com/anthropics/claude-code

### Section/Topic

Wrong link

### Current Documentation
```markdown
**Learn more in the [official documentation](https://docs.anthropic.com/en/docs/claude-code/overview)**.
```

### What's Wrong or Missing?

Link goes to 404

### Suggested Improvement
```markdown
**Learn more in the [official documentation](https://code.claude.com/docs)**.
```

### Impact

Low - Minor confusion or inconv