docs: fix outdated GPU telemetry documentation link in README.md

[nekomeowww]

Summary

The documentation link to GPU Telemetry seems to be broken and outdated already, it will result in 404 Not Found if users directly visit this link. However, by comparing to the already done snapshot from the Wayback Machine of Internet Archive, I found the old archive which lead me to the newer version of the documentation eventually.

The snapshot of the older version of the documentation caught by Wayback Machine of Internet Archive: https://web.archive.org/web/20211020083227/https://docs.nvidia.com/datacenter/cloud-native/kubernetes/dcgme2e.html#gpu-telemetry

The newer version of the documentation: https://docs.nvidia.com/datacenter/cloud-native/gpu-telemetry/latest/

Changes

• Updated the linked documentation.
• Removed several unnecessary trailing spaces within the Markdown content