chore: add fdusd to sponsored feeds (#363)

Author: ali-behjati

pages/price-feeds/sponsored-feeds.mdx

@@ -83,6 +83,7 @@ The price feeds listed in the table below are currently sponsored in Sui mainnet
 | AFSUI/USD | `17cd845b16e874485b2684f8b8d1517d744105dbb904eec30222717f4bc9ee0d` |
 | HASUI/USD | `6120ffcf96395c70aa77e72dcb900bf9d40dccab228efca59a17b90ce423d5e8` |
 | VSUI/USD  | `57ff7100a282e4af0c91154679c5dae2e5dcacb93fd467ea9cb7e58afdcfde27` |
+| FDUSD/USD | `ccdc1a08923e2e4f4b1e6ea89de6acbc5fe1948e9706f5604b8cb50bc1ed3979` |
 
 ## Aptos