[DOC] Fix broken Tutorial link under Next Steps

Documentation issue

Description

There seems to be an issue with the Tutorial link under the Next Steps section of the Refine Core documentation.

Location

https://refine.dev/core/docs/

Under the Next Steps section, there is a link named Tutorial.

Steps to reproduce

1. Go to https://refine.dev/core/docs/
2. Scroll down to the Next Steps section.
3. Click on the Tutorial link.
4. The link navigates to a non-existent page/route.

Expected behavior

Clicking the Tutorial link should navigate to the valid tutorial introduction page:

https://refine.dev/core/tutorial/essentials/intro/

Actual behavior

The Tutorial link under Next Steps does not navigate to the expected tutorial page.

Interestingly, if https://refine.dev/core/tutorial/ is entered directly in the browser, it automatically redirects to:

https://refine.dev/core/tutorial/essentials/intro/

This suggests that the link under Next Steps → Tutorial may be pointing to an incorrect or outdated route.

Suggested fix

Update the Tutorial link under Next Steps to point to the current tutorial introduction page:

https://refine.dev/core/tutorial/essentials/intro/

Screenshots

Screenshots are attached showing:

1. The Tutorial link under Next Steps

1. The page/route reached after clicking the link

Describe the thing to improve

The Tutorial link under the Next Steps section on the Core Docs page (https://refine.dev/core/docs/) appears to point to an incorrect or outdated route. Clicking the link leads to a non-existent page, while the current tutorial is available at https://refine.dev/core/tutorial/essentials/intro/.

The link should be updated to point to the current Tutorial introduction page.

Describe the solution (optional)

No response