Update developer-docs-links.yaml

Author: Dexaran

src/data/developer-docs-links.yaml

@@ -195,6 +195,8 @@
           items:
             - id: docs-nav-erc-20
               to: /developers/docs/standards/tokens/erc-20/
+            - id: docs-nav-erc-223
+              to: /developers/docs/standards/tokens/erc-223/
             - id: docs-nav-erc-721
               to: /developers/docs/standards/tokens/erc-721/
             - id: docs-nav-erc-777