docs(ramps): align sandbox-testing page with api-reference source of truth#358

pengying wants to merge 1 commit intomainlightsparkdev/grid-api:mainfrom

04-20-docs_ramps_align_sandbox-testing_page_with_api-reference_source_of_truthlightsparkdev/grid-api:04-20-docs_ramps_align_sandbox-testing_page_with_api-reference_source_of_truthCopy head branch name to clipboard