[ETCM-355] Use eth/64 in the nomad test env

Author: lukasz-golebiewski

src/main/resources/conf/chains/testnet-internal-nomad-chain.conf

@@ -3,7 +3,7 @@
     # 1 - mainnet, 3 - ropsten, 7 - mordor
     network-id = 42
 
-    capabilities = ["etc/64"]
+    capabilities = ["eth/64"]
 
     # Possibility to set Proof of Work target time for testing purposes.
     # null means that the standard difficulty calculation rules are used