The text for the "Configure" button is actually editable at the Store level. If you wish to change the text for this button, follow the instructions below:
  1. Navigate to Fundraising > select eCommerce
  2. From the Stores tab, click Edit next to the appropriate store
  3. Skip to step 12. Configure Standard Pages and click Edit next to Page Heading and Other Common Elements Page
  4. Change the value in "Configure Item Button:" and click Save