(fix) Change example link (#419)

Author: aditya520

pages/entropy/examples.mdx

@@ -1,4 +1,4 @@
 # Example Applications
 
-The [Coin Flip](https://github.com/pyth-network/pyth-crosschain/tree/main/target_chains/ethereum/examples/coin_flip) example demonstrates how to build a smart contract that
+The [Coin Flip](https://github.com/pyth-network/pyth-examples/tree/main/entropy/coin_flip) example demonstrates how to build a smart contract that
 interacts with Pyth Entropy as well as a typescript client for that application.