Add -only

Author: forgetso

src/content/docs/en/basics/server-side-verification.mdx

@@ -14,7 +14,7 @@ To verify that the token is indeed real and valid, you must now verify it at the
 
 https://api.prosopo.io/siteverify
 
-EU and US endpoints are also available:
+EU-only and US-only endpoints are also available:
 
 - https://eu-api.prosopo.io/siteverify
 - https://us-api.prosopo.io/siteverify