[Docs] Merged NCCL and RCCL tests examples under `Clusters` into one … #6007

Job	Run time
compute-version	2s
build-docs / build-docs	1m 9s
build-artifacts / gateway-build	14s
build-artifacts / code-lint	41s
build-artifacts / frontend-build	8s
build-artifacts / runner-test (macos-latest)	1m 19s
build-artifacts / runner-test (ubuntu-latest)	58s
build-artifacts / generate-json-schema	23s
build-artifacts / python-build	20s
build-artifacts / python-test (macos-latest, 3.13)	3m 6s
build-artifacts / python-test (macos-latest, 3.10)	2m 9s
build-artifacts / python-test (macos-latest, 3.9)	3m 28s
build-artifacts / python-test (macos-latest, 3.12)	3m 27s
build-artifacts / python-test (ubuntu-latest, 3.11)	4m 35s
build-artifacts / python-test (ubuntu-latest, 3.9)	4m 56s
build-artifacts / python-test (macos-latest, 3.11)	3m 12s
build-artifacts / python-test (ubuntu-latest, 3.10)	4m 51s
build-artifacts / python-test (ubuntu-latest, 3.13)	3m 52s
build-artifacts / python-test (windows-latest, 3.9)	1m 40s
build-artifacts / python-test (ubuntu-latest, 3.12)	4m 26s
build-artifacts / python-test (windows-latest, 3.11)	2m 23s
build-artifacts / python-test (windows-latest, 3.12)	2m 40s
build-artifacts / python-test (windows-latest, 3.10)	1m 50s
build-artifacts / python-test (windows-latest, 3.13)	2m 7s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	34s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	39s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	15s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	15s
	55m 39s

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