Update GPU availability in the EGI Federated Cloud

[sebastian-luna-valero]

Summary

This PR updates the information published in: https://docs.egi.eu/users/compute/cloud-compute/gpgpu/

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Related issue :

[github-actions[bot]]

Documentation preview deployed!

Available at https://docs.egi.eu/documentation/448

[sebastian-luna-valero]

A preview is available at: https://docs.egi.eu/documentation/448/users/compute/cloud-compute/gpgpu/

[sebastian-luna-valero]

Also, we need to add: https://docs.cloud.muni.cz/cloud/gpus/

[github-actions[bot]]

Documentation preview deployed!

Available at https://docs.egi.eu/documentation/448

[github-actions[bot]]

Documentation preview deployed!

Available at https://docs.egi.eu/documentation/448

[gwarf]

@sebastian-luna-valero please review and resolve the conversations so that it's marked as ready for being merged, thanks!

[sebastian-luna-valero]

Done, thanks @gwarf