chore: fix prover README typos

packages/prover/README.md

@@ -7,8 +7,6 @@
 
 > This package is part of [ChainSafe's Lodestar](https://lodestar.chainsafe.io) project
 
-Typescript REST client for the [Ethereum Consensus API spec](https://github.com/ethereum/beacon-apis)
-
 ## Usage
 
 You can use the `@lodestar/prover` in two ways, as a Web3 Provider and as proxy. For prover use case see below example.
@@ -37,13 +35,12 @@ console.log({balance, address});
 You can also invoke the package as binary.
 
 ```bash
-npm -i g @lodestar/prover
+npm i g @lodestar/prover
 
 lodestar-prover start \
   --network sepolia \
-  --execution-rpc https://lodestar-sepoliarpc.chainsafe.io \
-  --mode rest \
-  --beacon-rpc https://lodestar-sepolia.chainsafe.io \
+  --execution-rpc-url https://lodestar-sepoliarpc.chainsafe.io \
+  --beacon-urls https://lodestar-sepolia.chainsafe.io \
   --port 8080
 ```