fix: rename mainnet -> ethereum

we must match what we have in the executors file (which is what tycho-indexer gives us)

foundry/scripts/README.md

@@ -32,8 +32,8 @@ from being stored in the shell history.
 
 ## Deploy Tycho Router
 
-For each of the following, you must select one of `tenderly_mainnet`, `tenderly_base`,
-`mainnet`, or `base` as the network.
+For each of the following, you must select one of `tenderly_ethereum`, `tenderly_base`,
+`ethereum`, or `base` as the network.
 
 1. Deploy router: `npx hardhat run scripts/deploy-router.js --network NETWORK`
 2. Define the accounts to grant roles to in `scripts/roles.json`

foundry/scripts/roles.json

@@ -1,5 +1,5 @@
 {
-  "mainnet": {
+  "ethereum": {
     "EXECUTOR_SETTER_ROLE": [
       "0x58Dc7Bf9eD1f4890A7505D5bE4E4252978eAF655"
     ],
@@ -14,7 +14,7 @@
       "0x58Dc7Bf9eD1f4890A7505D5bE4E4252978eAF655"
     ]
   },
-  "tenderly_mainnet": {
+  "tenderly_ethereum": {
     "EXECUTOR_SETTER_ROLE": [
       "0x58Dc7Bf9eD1f4890A7505D5bE4E4252978eAF655"
     ],