Update index.md

Author: stayseesong

src/connections/destinations/catalog/actions-cordial/index.md

@@ -50,6 +50,6 @@ To send events, define the `createContactactivity` destination action. In additi
 
 ### Adding users to and removing from lists
 
-If you plan segmenting users in Cordial, make sure you define the `addContactToList` and `removeContactFromList` destination actions. Both actions require the Segment group ID. `addContactToList` optionally accepts a list name. 
+If you plan to segment users in Cordial, make sure you define the `addContactToList` and `removeContactFromList` destination actions. Both actions require the Segment group ID. `addContactToList` optionally accepts a list name. 
 
-Although optional, list name should be considered a must have, because it simplifies segmenting contacts in Cordial based on lists. Lists without a name are called following the `segment_[groupId]` pattern.
+Although optional, you should consider the list name as a required option, because it simplifies segmenting contacts in Cordial based on lists. Lists without a name are called following the `segment_[groupId]` pattern.