docs/tm-core/using-tm: fix indentation for genesis.validators

docs/tendermint-core/using-tendermint.md

@@ -42,12 +42,14 @@ definition](https://github.com/tendermint/tendermint/blob/master/types/genesis.g
 - `genesis_time`: Official time of blockchain start.
 - `chain_id`: ID of the blockchain. This must be unique for
   every blockchain. If your testnet blockchains do not have unique
-  chain IDs, you will have a bad time.
-- `validators`:
-- `pub_key`: The first element specifies the `pub_key` type. 1
+  chain IDs, you will have a bad time. The ChainID must be less than 50 bytes.
+- `validators`: List of initial validators. Note this may be overridden entirely by the
+  application, and may be left empty to make explicit that the
+  application will initialize the validator set with ResponseInitChain.
+  - `pub_key`: The first element specifies the `pub_key` type. 1
   == Ed25519. The second element are the pubkey bytes.
-- `power`: The validator's voting power.
-- `name`: Name of the validator (optional).
+  - `power`: The validator's voting power.
+  - `name`: Name of the validator (optional).
 - `app_hash`: The expected application hash (as returned by the
   `ResponseInfo` ABCI message) upon genesis. If the app's hash does
   not match, Tendermint will panic.
@@ -93,8 +95,7 @@ definition](https://github.com/tendermint/tendermint/blob/master/types/genesis.g
       "power": "1",
       "name": "node3"
     }
-  ],
-  "app_hash": ""
+  ]
 }
 ```