fix(setup): quote the network passphrase and use the real registry id

Author: 0dillon

.env.example

@@ -2,10 +2,12 @@
 LK_RPC_URL=https://soroban-testnet.stellar.org
 
 # Network passphrase. Must match the network the RPC endpoint serves.
-LK_NETWORK_PASSPHRASE=Test SDF Network ; September 2015
+# Quoted because it contains a semicolon. Unquoted, `set -a && . ./.env` ends the
+# assignment at the `;` and tries to run the rest as a command, leaving this empty.
+LK_NETWORK_PASSPHRASE="Test SDF Network ; September 2015"
 
-# Deployed registry contract ID.
-LK_REGISTRY_ID=CXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+# Deployed registry contract ID. This is ledgerkeep-core's testnet registry.
+LK_REGISTRY_ID=CB7K56KG3KHC43FROV534M55FMVGBW24NUFQSXSRMH7OS54242GFYMGN
 
 # Path to a file containing the keeper's secret seed, one line, nothing else.
 # This is a PATH, not a key. Never put a secret seed in this file or in a flag.