Clarify how <cloak> is applied.

Author: sadiepowell

docs/4/modules/cloak.yml

@@ -62,4 +62,4 @@ umodes:
   example: ""
 
 special_notes: |-
-  The first `<cloak>` tag will be used for the cloak set when a user enables user mode `x` (cloak). The rest will be generated and used to check bans. This allows you to migrate cloaking mode or to change your cloaking key without breaking your bans.
+  The first `<cloak>` tag that creates a valid cloak will be used for the cloak set when a user enables user mode `x` (cloak). The rest will be generated and used to check bans. This allows you to migrate cloaking mode or to change your cloaking key without breaking your bans.