Update GPU docs (#5515) #4056

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	4m 46s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 47s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 6s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	6m 14s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	3m 59s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 19s
Dry Run Goreleaser	7m 28s
Test Getting started	5m 9s
Unit Tests (datacatalog) / Run Unit Test	2m 46s
Unit Tests (flytecopilot) / Run Unit Test	2m 26s
Unit Tests (flyteadmin) / Run Unit Test	4m 11s
Unit Tests (flytectl) / Run Unit Test	3m 38s
Unit Tests (flyteplugins) / Run Unit Test	3m 46s
Unit Tests (flytepropeller) / Run Unit Test	4m 3s
Check Go Generate (flyteadmin) / Go Generate	2m 15s
Check Go Generate (datacatalog) / Go Generate	1m 29s
Check Go Generate (flytecopilot) / Go Generate	1m 17s
Unit Tests (flytestdlib) / Run Unit Test	3m 30s
Check Go Generate (flytectl) / Go Generate	2m 1s
Check Go Generate (flytepropeller) / Go Generate	2m 11s
Lint (datacatalog) / Run Lint	2m 18s
Lint (flyteadmin) / Run Lint	2m 56s
Lint (flytectl) / Run Lint	2m 37s
Lint (flyteidl) / Run Lint	1m 57s
Lint (flyteplugins) / Run Lint	2m 52s
Lint (flytepropeller) / Run Lint	3m 5s
Lint (flytestdlib) / Run Lint	2m 26s
Integration Test (flyteadmin) / Integration tests	6m 11s
	1h 40m 44s

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