Fix FAApp field name (#82)

Author: vovac12

pallets/types/src/evm.rs

@@ -26,7 +26,7 @@ pub enum EVMAppKind {
     /// Used for native token transfers
     EthApp,
     /// Used for ERC20 tokens
-    #[cfg_attr(feature = "std", serde(rename = "faApp"))]
+    #[cfg_attr(feature = "std", serde(rename = "FaApp"))]
     FAApp,
     /// Legacy HASHI bridge contract
     HashiBridge,