[API Shield] Add cf-web-page label

Author: pedrosousa

src/content/docs/api-shield/management-and-monitoring/endpoint-labels.mdx

@@ -47,6 +47,8 @@ Use managed labels to identify endpoints by use case. Cloudflare may automatical
 
 `cf-rss-feed`: Add this label to endpoints that expect traffic from RSS clients.
 
+`cf-web-page`: Add this label to endpoints that serve HTML pages.
+
 :::note
 [Bot Fight Mode](/bots/get-started/bot-fight-mode/) will not block requests to endpoints labeled as `cf-rss-feed`.