Clarify optionality of authorization_token in pyth-lazer-agent sample config

Author: merolish

apps/pyth-lazer-agent/config/config.toml

@@ -2,5 +2,7 @@ relayer_urls = ["wss://relayer-0.pyth-lazer.dourolabs.app/v1/transaction", "wss:
 publish_keypair_path = "/path/to/solana/id.json"
 listen_address = "0.0.0.0:8910"
 publish_interval_duration = "25ms"
-authorization_token = "token1"
 enable_update_deduplication = true
+# Publishers with existing tokens may still need to provide them. Please confirm with the Lazer team.
+# New publishers will not need this line.
+# authorization_token = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-pblr"