Clarify allowWildcardNames

Author: tashian

step-ca/policies.mdx

@@ -83,7 +83,7 @@ A rule for `*.éxàmplê.com` will internally be represented using its internati
 This rule will match `www.éxàmplê.com` as well as its internationalized representation `www.xn–xmpl-0na6cm.com` (and other subdomains).
 
 By default it is not possible to request a certificate with a literal wildcard character in the domain, like `*.example.com`.
-It is possible to configure a policy to allow this:
+It is possible to configure the policy to allow this:
 
 ```
 "policy": {