Such functionality to manage the plural names is not supported. There is feature request logged in our Feedback
portal where you could vote for it and subscribe for receiving notifications on status change.
Note that most voted requests are developed with higher priority.
Furthermore, the plural name is used to evaluate the content, so even if it is changed with the current implementation the items should not be resolved.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Sitefinity CMS Ideas&Feedback Portal
and vote to affect the priority of the items