[Docs]: Fix GitHub button on main website

### Prerequisites

- [x] I have searched existing issues to ensure this documentation issue hasn't been reported already
- [x] I have checked the current documentation thoroughly

### Documentation Type

Incorrect/Outdated Information

### Component/Area

General

### Documentation Location

_No response_

### Issue Description

On the main https://www.composerkit.xyz/ website, the 'GitHub' button leads to a 404 page not found

### Current Content (if applicable)

```markdown

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### Suggested Improvement

```markdown

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### Missing Information

_No response_

### Requested Code Examples

```tsx

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### Target Audience

All developers

### Priority

Medium - Would help many developers

### User Impact

_No response_

### Additional Context

_No response_

### Contribution

- [x] I would be willing to submit a PR to improve this documentation
- [x] I would be willing to review documentation improvements