[Rules] Remove cf-threat-score header from managed transform (#17877)

Author: pedrosousa

src/content/docs/rules/transform/managed-transforms/reference.mdx

@@ -31,7 +31,6 @@ Adds HTTP headers with bot-related values to the request sent to the origin serv
 
 - `cf-bot-score`: Contains the <GlossaryTooltip term="bot score" link="/bots/concepts/bot-score/">bot score</GlossaryTooltip> (for example, `30`).
 - `cf-verified-bot`: Contains `true` if the request comes from a <GlossaryTooltip term="verified bot" link="/bots/concepts/bot/#verified-bots">verified bot</GlossaryTooltip>, or `false` otherwise.
-- `cf-threat-score`: Contains the <GlossaryTooltip term="threat score" link="/waf/tools/security-level/#threat-score">threat score</GlossaryTooltip> (for example, `10`).
 - `cf-ja3-hash`: Contains the <GlossaryTooltip term="JA3 fingerprint" link="/bots/concepts/ja3-ja4-fingerprint/">JA3 fingerprint</GlossaryTooltip>.
 - `cf-ja4`: Contains the <GlossaryTooltip term="JA3 fingerprint" link="/bots/concepts/ja3-ja4-fingerprint/">JA4 fingerprint</GlossaryTooltip>.