Fix indexing batch delay in .env.example to prevent memory spikes

.env.example

@@ -69,10 +69,10 @@ ADMIN_PASSWORD=securepassword123
 ELASTICSEARCH_USERNAME = admin
 
 # Elastic password
-ELASTICSEARCH_PASSWORD = password
-
-# Indexing batch size (smaller batches use less memory)
-INDEXING_BATCH_SIZE=100
-
-# Delay between batches in milliseconds (helps prevent memory spikes)
-INDEXING_BATCH_DELAY=500
+ELASTICSEARCH_PASSWORD = password
+
+# Indexing batch size (smaller batches use less memory)
+INDEXING_BATCH_SIZE=100
+
+# Delay between batches in seconds (helps prevent memory spikes)
+INDEXING_BATCH_DELAY=0.5