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914735f3 - Spaces: simple GPU instructions for PyTorch, JAX and tensorflow (#416)

Spaces: simple GPU instructions for PyTorch, JAX and tensorflow (#416) * Simple GPU instructions: torch / JAX / tensorflow. * Update overview to mention upgrades. * Move GPU section before Gradio, as suggested in review. * Add suggestions from code review. * Add more detail and screenshots to `spaces-gpus` * tweak * consistency tweak * Fix typo in path. Co-authored-by: Julien Chaumond <julien@huggingface.co>