chore: update example config

Author: b00f

config/config.sample.yml

@@ -4,16 +4,13 @@ bot_name: "Pagu-Development"
 network: "Mainnet"
 
 # Pactus clients
-local_node: "localhost:50051" # Address of the local Pactus node for direct communication.
+local_node: "bootstrap1.pactus.org:50051" # Address of the local Pactus node for direct communication.
 
 # List of Pactus nodes Pagu can connect to for information.
 # These nodes must have public gRPC endpoints.
 network_nodes:
   [
     "bootstrap1.pactus.org:50051",
-    "bootstrap2.pactus.org:50051",
-    "bootstrap3.pactus.org:50051",
-    "bootstrap4.pactus.org:50051",
   ]
 
 # Wallet configuration