Docs: add vercel.json #2886

Job	Run time
call_ci_workflow / resolve-modules-arch	6s
call_ci_workflow / resolve-modules	7s
save-sealos / save-sealos	25s
call_ci_workflow / test	0s
call_ci_workflow / build (sealos, amd64)	2m 39s
call_ci_workflow / build (sealctl, amd64)	3m 9s
call_ci_workflow / build (lvscare, amd64)	1m 32s
call_ci_workflow / build (image-cri-shim, amd64)	1m 6s
call_ci_workflow / build (sealos, arm64)	2m 34s
call_ci_workflow / build (sealctl, arm64)	2m 36s
call_ci_workflow / build (lvscare, arm64)	1m 25s
call_ci_workflow / build (image-cri-shim, arm64)	1m 7s
call_ci_workflow / docker (amd64)	1m 25s
call_ci_workflow / docker (arm64)	1m 7s
container-sealos	0s
build-on-cluster-patch-image	0s
build-on-cluster-image	0s
	19m 18s

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