Update evm.mdx (#681)

add swellchain

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)         |
 | Story Protocol        | [`0xD458261E832415CFd3BAE5E416FdF3230ce6F134`](https://www.storyscan.xyz/address/0xD458261E832415CFd3BAE5E416FdF3230ce6F134)              |
+| Swellchain            | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://explorer.swellnetwork.io/address/0x2880aB155794e7179c9eE2e38200202908C17B43)       |
 | Taiko                 | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://taikoscan.network/address/0x2880aB155794e7179c9eE2e38200202908C17B43)              |
 | Unichain              | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://uniscan.xyz/address/0x2880ab155794e7179c9ee2e38200202908c17b43)                    |
 | Viction               | [`0xA2aa501b19aff244D90cc15a4Cf739D2725B5729`](https://tomoscan.io/address/0xA2aa501b19aff244D90cc15a4Cf739D2725B5729)                    |
@@ -163,6 +164,7 @@ Pyth is currently available on the EVM networks below using Pyth Stable price so
 | Sonic Blaze Testnet               | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://blaze.soniclabs.com/address/0x2880ab155794e7179c9ee2e38200202908c17b43)                                               |
 | Story Testnet                     | [`0x36825bf3Fbdf5a29E2d5148bfe7Dcf7B5639e320`](https://aeneid.storyscan.xyz/address/0x36825bf3Fbdf5a29E2d5148bfe7Dcf7B5639e320)                                              |
 | Superseed Testnet                 | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://sepolia-explorer.superseed.xyz/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                                    |
+| Swellchain Testnet                | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://swell-testnet-explorer.alt.technology/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                             |
 | Tabi Testnet                      | [`0x5744Cbf430D99456a0A8771208b674F27f8EF0Fb`](https://testnetv2.tabiscan.com/address/0x5744Cbf430D99456a0A8771208b674F27f8EF0Fb)                                            |
 | Taiko Hekla                       | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://hekla.taikoscan.network/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                                           |
 | Unichain Sepolia                  | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://unichain-sepolia.blockscout.com/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                                   |