bump endpoints in remote walkthrough to dusk-7

docs/developer/tutorials/run-local-rollup-against-remote-sequencer.md

@@ -31,7 +31,7 @@ additional genesis information to work with the remote sequencer.
 Run the following using the Astira cli:
 
 ```bash
-astria-go sequencer blockheight --sequencer-url https://rpc.sequencer.dusk-5.devnet.astria.org
+astria-go sequencer blockheight --sequencer-url https://rpc.sequencer.dusk-7.devnet.astria.org
 ```
 
 Then, open the `geth-genesis-local.json` file and update the `chainId` and
@@ -129,23 +129,24 @@ rollup](#setup-a-geth-rollup).
 
 ```toml
 [dusk]
-sequencer_chain_id = 'astria-dusk-5'
-sequencer_grpc = 'https://grpc.sequencer.dusk-5.devnet.astria.org/'
-sequencer_rpc = 'https://rpc.sequencer.dusk-5.devnet.astria.org/'
+sequencer_chain_id = 'astria-dusk-7'
+sequencer_grpc = 'https://grpc.sequencer.dusk-7.devnet.astria.org/'
+sequencer_rpc = 'https://rpc.sequencer.dusk-7.devnet.astria.org/'
 rollup_name = '<your rollup name>' # update this value
 default_denom = 'nria'
 ```
 
-Then open the `~/.astria/default/config/base-config.toml` and update the
-`astria_composer_private_key` variable with the private key from the sequencer
-account you just created.
+Then open the `~/.astria/default/config/composer_dev_priv_key` and replace dev private
+key in that file with your private key from the sequencer account you just
+created. 
 
-```toml
-astria_composer_private_key = '<your priv key>'
-```
+:::warning
+If you skip updating the priv key the Astria services will still start correctly
+but your Composer will not be able to write transactions to the sequencer.
+:::
 
 You can then use the [Sequencer
-Faucet](https://faucet.sequencer.dusk-5.devnet.astria.org/) to fund the account
+Faucet](https://faucet.sequencer.dusk-7.devnet.astria.org/) to fund the account
 you just created using the account address.
 
 ## Run the local Astria components against the Remote Sequencer