fix: typo

Author: ericnordelo

packages/core/cairo_alpha/CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## 3.1.0 (Unreleased)
 
-- Add ERC1155 wrapper extension ([#763](https://github.com/OpenZeppelin/contracts-wizard/pull/763))
+- Add ERC20 wrapper extension ([#763](https://github.com/OpenZeppelin/contracts-wizard/pull/763))
 
 - **Breaking changes**:
   - Use OpenZeppelin Contracts for Cairo v4.0.0-alpha.0.