Update ERC-7572: add symbol to contractURI schema

Merged by EIP-Bot.

ERCS/erc-7572.md

@@ -36,7 +36,7 @@ The string returned from `contractURI()` MAY be an offchain resource or onchain
 
 The `ContractURIUpdated()` event SHOULD be emitted on updates to the contract metadata for offchain indexers to query the contract.
 
-If the underlying contract additionally provides a `name()` method, the metadata returned by `contractURI()`'s `name` property is RECOMMENDED to take precedence. This enables contract creators to update their contract name with an event that notifies of the update.
+If the underlying contract provides any methods that conflict with the `contractURI` schema such as `name()` or `symbol()`, the metadata returned by `contractURI()` is RECOMMENDED to take precedence. This enables contract creators to update their contract details with an event that notifies of the update.
 
 ### Schema for contractURI
 
@@ -51,6 +51,10 @@ The schema for the JSON returned from `contractURI()` MUST conform to:
       "type": "string",
       "description": "The name of the contract."
     },
+    "symbol": {
+      "type": "string",
+      "description": "The symbol of the contract."
+    },
     "description": {
       "type": "string",
       "description": "The description of the contract."
@@ -93,6 +97,7 @@ Example:
 ```json
 {
   "name": "Example Contract",
+  "symbol": "EC",
   "description": "Your description here",
   "image": "ipfs://QmTNgv3jx2HHfBjQX9RnKtxj2xv2xQCtbDXoRi5rJ3a46e",
   "banner_image": "ipfs://QmdChMVnMSq4U7oVKhud7wUSEZGnwuMuTY5rUQx57Ayp6H",