Update smart-contracts/advanced/multicall.md

Co-authored-by: longfeiW <[email protected]>

Author: xBalbinus

smart-contracts/advanced/multicall.md

@@ -6,7 +6,7 @@ description: >-
 
 # Multicall
 
-Multicall is a powerful tool that offers several advantages for interacting with smart contracts on the Filecoin Virtual Machine (FVM). 
+[Multicall3](https://www.multicall3.com/) is a powerful tool that offers batch contract calls to smart contracts on the Filecoin Virtual Machine (FVM). 
 
 ## Contract address