[Docs] Remove the mention of the gateway endpoint #3514 #6307

Job	Run time
compute-version	3s
build-docs / build-docs	1m 18s
build-artifacts / frontend-build	11s
build-artifacts / runner-test (ubuntu-latest)	1m 8s
build-artifacts / code-lint	44s
build-artifacts / gateway-build	10s
build-artifacts / runner-test (macos-latest)	40s
build-artifacts / generate-json-schema	18s
build-artifacts / python-build	20s
build-artifacts / python-test (macos-latest, 3.13)	4m 23s
build-artifacts / python-test (macos-latest, 3.10)	4m 5s
build-artifacts / python-test (ubuntu-latest, 3.9)	5m 20s
build-artifacts / python-test (macos-latest, 3.11)	3m 45s
build-artifacts / python-test (macos-latest, 3.9)	3m 44s
build-artifacts / python-test (macos-latest, 3.12)	3m 55s
build-artifacts / python-test (ubuntu-latest, 3.13)	4m 50s
build-artifacts / python-test (windows-latest, 3.10)	2m 2s
build-artifacts / python-test (ubuntu-latest, 3.10)	5m 27s
build-artifacts / python-test (ubuntu-latest, 3.11)	5m 12s
build-artifacts / python-test (windows-latest, 3.11)	1m 53s
build-artifacts / python-test (windows-latest, 3.9)	2m 34s
build-artifacts / python-test (windows-latest, 3.12)	2m 33s
build-artifacts / python-test (ubuntu-latest, 3.12)	5m 7s
build-artifacts / python-test (windows-latest, 3.13)	2m 2s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	30s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	35s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	16s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	16s
	1h 3m 21s

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