correcting repo in link (#5475)

Corrected!

Author: jendefig

content/blogs/2024-03-12-dvc-ray.md

@@ -14,7 +14,8 @@ descriptionLong: >
   pipelines.
 picture: 2024-03-12/1-cover-dvc-ray.png
 pictureComment:
-  Ray + DVC integration [example](https://github.com/iterative/ray-dvc)
+  Ray + DVC integration
+  [example](https://github.com/iterative/tutorial-mnist-dvc-ray)
 authors:
   - mikhail_rozhkov
   - dave_berenbaum