Update evm.mdx (#719)

add xau to hyperevm

Author: KemarTiti

pages/price-feeds/sponsored-feeds/evm.mdx

@@ -127,6 +127,7 @@ Update Parameters: **1 hour heartbeat or 1% price deviation**
 | USR/USD.RR        | `512a79cc65f49531f0bbb72956353e79ecdc1e4a6e5241847196c1f9a11d8a52` |
 | USOL/USD          | `974c7a77dbace44d229be17fc176975e06404b004476aeaff37641818cb0c55a` |
 | BUDDY/USD         | `ac2adf4571a391da22a2d39e8c5eb32ceecd6ab38c386a9194d669deece74dee` |
+| XAU/USD           | `765d2ba906dbc32ca17cc11f5310a89e9ee1f6420508c63861f2f8ba4ee34bb2` |
 
 ## Kraken Mainnet