Update evm.mdx (#598)

add unichin

Author: KemarTiti

pages/price-feeds/contract-addresses/evm.mdx

@@ -70,6 +70,7 @@ Pyth is currently available on the EVM networks below using Pyth Stable price so
 | Sonic(Fantom)         | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://sonicscan.org/address/0x2880ab155794e7179c9ee2e38200202908c17b43)                     |
 | Soneium               | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://soneium.blockscout.com/address/0x2880aB155794e7179c9eE2e38200202908C17B43)            |
 | Taiko                 | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://taikoscan.network/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                 |
+| Unichain              | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://uniscan.xyz/address/0x2880ab155794e7179c9ee2e38200202908c17b43)                       |
 | Viction               | [`0xA2aa501b19aff244D90cc15a4Cf739D2725B5729`](https://tomoscan.io/address/0xA2aa501b19aff244D90cc15a4Cf739D2725B5729)                       |
 | WEMIX                 | [`0xA2aa501b19aff244D90cc15a4Cf739D2725B5729`](https://explorer.wemix.com/address/0xA2aa501b19aff244D90cc15a4Cf739D2725B5729)                |
 | ZKFair                | [`0xA2aa501b19aff244D90cc15a4Cf739D2725B5729`](https://scan.zkfair.io/address/0xA2aa501b19aff244D90cc15a4Cf739D2725B5729)                    |