The homes plugin on the vanilla server has been updated to version 1.1.0.
This update brings the ability to name your homes.
Existing homes have a name of "null" due to the update process. A hotfix has been applied, existing homes now show as just their number. Simply go to your home by its own number and run /sethome [number] [desired name] to update them. If you wish to leave them unnamed simply avoid putting a name and it'll return to showing as a number in your homes list.
https://gitlab.com/bloxgate/SuperSimpleHomes/tags/1.1.0