fix: update README.md

Author: JuArce

examples/l2/README.md

@@ -191,9 +191,9 @@ make prove_state_transition
 
 - Wait 24 hs for the proof to be aggregated, or if running locally, run the aggregator with either:
 
-    ```make start_proof_aggregator_ethereum_package AGGREGATOR=sp1``` 
+    ```make proof_aggregator_start_ethereum_package AGGREGATOR=sp1``` 
 or with cuda:
-    ```make start_proof_aggregator_gpu_ethereum_package AGGREGATOR=sp1```
+    ```make proof_aggregator_start_gpu_ethereum_package AGGREGATOR=sp1```
 
 -   Update state transition on chain: