Update ERC-7644: Name Registry

Merged by EIP-Bot.

ERCS/erc-7644.md

@@ -15,7 +15,7 @@ requires: 721
 
 This extension defines an interface that adds a naming mechanism to [ERC-721](./eip-721.md) tokens. It allows each token to have a unique name with a set expiration date, ensuring uniqueness within the current NFT contract. The interface includes functions for assigning, updating, and querying names and their associated tokens, ensuring that names remain unique until they expire. The entity responsible for setting names depends on the specific use case scenario when utilizing this extension.
 
-### Motivation
+## Motivation
 
 As decentralized domain registration methods evolve with the integration of NFTs, we see an opportunity to extend this paradigm to the realm of usernames. By associating token IDs with usernames, we enhance the intuitive identification of entities within decentralized ecosystems.