[Bug] docs: Broken Inlang translation link in README (404 Error)

### Bug Description

The external translation link for the Inlang editor provided in the documentation/README is currently broken and returns a `404 Not Found` error. This happens due to the recent migration or deprecation of the external Crowdin/Inlang configuration setup.

### How to Reproduce

1. Go to the main repository README or the localization documentation section.
2. Click on the Inlang editor link/badge.
3. See error: `404 page not found`.

### Expected Behavior

### Expected behavior
The link should either point to the active and updated Inlang workspace configuration or be updated to reflect the new local/online translation workflow currently adopted by the community.

### Operating System

Linux - Ubuntu

### AppFlowy Version(s)

v0.5.x

### Screenshots

_No response_

### Additional Context

### Additional context
Discovered during a local localization audit for the Spanish (`es-VE.json`) translation module.