move env in example

example.env

@@ -24,10 +24,6 @@ API_PORT=3000
 # Heroku users will not use the same value.
 MQTT_HOST=
 
-# Set the max pool size for Passenger. (Only needed if using Heroku)
-# FarmBot Inc uses Heroku. Self hosters do not.
-MAX_POOL_SIZE=2
-
 # This is the password to the entire database.
 # Every server needs to set this.
 # Must be less than 100 characters long.
@@ -142,6 +138,10 @@ CIRCLE_PULL_REQUEST=
 # Can be deleted unless you are using codecov.
 CODECOV_TOKEN=
 
+# Set the max pool size for Passenger. (Only needed if using Heroku)
+# FarmBot Inc uses Heroku. Self hosters do not.
+MAX_POOL_SIZE=2
+
 # This is set by Heroku and used by the frontend to show the current version.
 # Most self hosting users will want to delete this.
 HEROKU_SLUG_COMMIT=