code stylr fixes

.prettierignore

@@ -1,5 +1,7 @@
 .vscode
 .idea
 artifacts
+artifacts-ovm
 cache
+cache-ovm
 contracts/Verifier*.sol

hardhat.config.js

@@ -1,3 +1,4 @@
+/* eslint-disable indent */
 require('@nomiclabs/hardhat-waffle')
 require('@eth-optimism/hardhat-ovm')
 require('dotenv').config()

test/full.test.js

@@ -57,7 +57,7 @@ describe('TornadoPool', () => {
       await proxy
         .admin()
         .should.be.revertedWith(
-          "Transaction reverted: function selector was not recognized and there's no fallback function",
+          'Transaction reverted: function selector was not recognized and there is no fallback function',
         )
     })
   })