[Bug]: Broken links and paths in Clusters examples

[r4victor]

Steps to reproduce

After moving around examples, links from Clusters examples to github are broken:

https://github.com/dstackai/dstack/blob/a444b846e51a5b025c0aed081a65d6b5296508fa/examples/clusters/a3high/README.md#L229

Also the examples themselves are not reproducible since the paths to configurations are wrong:

https://github.com/dstackai/dstack/blob/a444b846e51a5b025c0aed081a65d6b5296508fa/examples/clusters/rccl-tests/README.md#L112

Actual behaviour

No response

Expected behaviour

No response

dstack version

master

Server logs

Additional information

No response