Here’s how you rename your Deck;
Step 1: Login using your creator credentials
Step 2: Go to ‘Create’ section using left navigation menu
Step 3: Open the topic in which you have created that deck
Step 4: Locate the deck in the list of learning content inside this topic
Step 5: Now you can rename the deck by either clicking on the deck name or by clicking on 2nd icon under ‘Actions’ column
Step 6: Rename and Hit enter to save