[SSL] Clarify USSL for partial zones is not limited to first-level#22600

RebeccaTamachiro merged 1 commit intoproductioncloudflare/cloudflare-docs:productionfrom

rebecca/ssl-clarify-ussl-partial-zonescloudflare/cloudflare-docs:rebecca/ssl-clarify-ussl-partial-zonesCopy head branch name to clipboard