Update contacting-cloudflare-support.mdx (#21121)

Removed English from best effort languages because it is our main language for supporting customers

Author: weronikanotbot

src/content/docs/support/contacting-cloudflare-support.mdx

@@ -220,7 +220,6 @@ Below are definitions of the priority levels Cloudflare assigns to cases and the
 For Enterprise support, Cloudflare provides support in English, but makes a best effort to offer help in the following languages:
 
 - Chinese
-- English
 - French
 - German
 - Japanese