README: Use --ethereum-rpc instead of --ethereum-ws in instructions
@@ -53,7 +53,7 @@ Once you have all the dependencies set up you can run the following:
```
cargo run -p graph-node --release -- \
--postgres-url postgresql://USERNAME[:PASSWORD]@localhost:5432/graph-node \
- --ethereum-ws mainnet:wss://mainnet.infura.io/_ws \
+ --ethereum-rpc mainnet:https://mainnet.infura.io/ \
--ipfs 127.0.0.1:5001 \
```
