Adding Ethereum Ecosystem (keep-starknet-strange#60)

Ethereum Ecosystem is the Unofficial Ecosystem page for Ethereum and some of its Layer 2s (including Starknet).

Link: https://www.ethereum-ecosystem.com/blockchains/starknet

Co-authored-by: mempoolsurfer <joriksch@gmail.com>

README.md

@@ -158,7 +158,7 @@
 - [Starknet Ecosystem](https://starknet-ecosystem.com) -
   The [community-driven](https://github.com/419Labs/starknet-ecosystem.com) initiative to showcase projects and teams building.
 - [Dappland](https://www.dappland.com/) - Discover dapps.
-- [Ethereum Ecosystem](https://www.ethereum-ecosystem.com/blockchains/starknet) - Discover the best of Ethereum and its layer 2s like Starknet. All in one place.
+- [Ethereum Ecosystem](https://www.ethereum-ecosystem.com/blockchains/starknet) - Unofficial Ecosystem page for Ethereum and some of its Layer 2s like Starknet.
 
 #### Community