fix: restore missing comments for coinbase configuration

.env.example

@@ -149,14 +149,14 @@ STARKNET_PRIVATE_KEY=
 STARKNET_RPC_URL=
 
 ## Coinbase
-COINBASE_COMMERCE_KEY=
-COINBASE_API_KEY=
-COINBASE_PRIVATE_KEY=
+COINBASE_COMMERCE_KEY=          # from coinbase developer portal
+COINBASE_API_KEY=               # from coinbase developer portal
+COINBASE_PRIVATE_KEY=           # from coinbase developer portal
 # if not configured it will be generated and written to:
 # runtime.character.settings.secrets.COINBASE_GENERATED_WALLET_ID and
 # runtime.character.settings.secrets.COINBASE_GENERATED_WALLET_HEX_SEED
-COINBASE_GENERATED_WALLET_ID=
-COINBASE_GENERATED_WALLET_HEX_SEED=
+COINBASE_GENERATED_WALLET_ID=       # not your address but the wallet id from generating a wallet through the plugin
+COINBASE_GENERATED_WALLET_HEX_SEED= # not your address but the wallet hex seed from generating a wallet through the plugin and calling export
 # for webhook plugin the uri you want to send the webhook to for dummy ones use https://webhook.site
 COINBASE_NOTIFICATION_URI=