Docs: fix link to blog post (#12270)
<!-- readthedocs-preview docs start -->
---
:books: Documentation previews :books:
- User's documentation (`docs`):
https://docs--12270.org.readthedocs.build/12270/
<!-- readthedocs-preview docs end -->
<!-- readthedocs-preview dev start -->
- Developer's documentation (`dev`):
https://dev--12270.org.readthedocs.build/12270/
<!-- readthedocs-preview dev end -->
