Update checkpointing documentation to mark resume_from_checkpoint as … #26491

Job	Run time
build-packages / init	6s
build-packages / build-packages (lightning)	18s
build-packages / build-packages (fabric)	22s
build-packages / build-packages (pytorch)	21s
install-pkg (ubuntu-22.04, fabric, 3.9)	1m 40s
install-pkg (ubuntu-22.04, fabric, 3.11)	1m 39s
install-pkg (ubuntu-22.04, pytorch, 3.9)	1m 47s
install-pkg (ubuntu-22.04, pytorch, 3.11)	1m 43s
install-pkg (ubuntu-22.04, lightning, 3.9)	1m 48s
install-pkg (ubuntu-22.04, lightning, 3.11)	1m 46s
install-pkg (ubuntu-22.04, notset, 3.9)	1m 48s
install-pkg (ubuntu-22.04, notset, 3.11)	1m 45s
install-pkg (macOS-14, fabric, 3.9)	52s
install-pkg (macOS-14, fabric, 3.11)	32s
install-pkg (macOS-14, pytorch, 3.9)	1m 11s
install-pkg (macOS-14, pytorch, 3.11)	42s
install-pkg (macOS-14, lightning, 3.9)	1m 0s
install-pkg (macOS-14, lightning, 3.11)	37s
install-pkg (macOS-14, notset, 3.9)	1m 8s
install-pkg (macOS-14, notset, 3.11)	45s
install-pkg (windows-2022, fabric, 3.9)	2m 34s
install-pkg (windows-2022, fabric, 3.11)	1m 41s
install-pkg (windows-2022, pytorch, 3.9)	2m 58s
install-pkg (windows-2022, pytorch, 3.11)	3m 3s
install-pkg (windows-2022, lightning, 3.9)	1m 55s
install-pkg (windows-2022, lightning, 3.11)	2m 56s
install-pkg (windows-2022, notset, 3.9)	1m 49s
install-pkg (windows-2022, notset, 3.11)	2m 2s
	40m 48s

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