guides/Heroku.md in pghero-2.1.0 vs guides/Heroku.md in pghero-2.1.1

@@ -92,5 +92,11 @@
 Minimum connections for high connections warning
 
 ```sh
 heroku config:set PGHERO_TOTAL_CONNECTIONS_THRESHOLD=100 # default
 ```
+
+Statement timeout for explain
+
+```sh
+heroku config:set PGHERO_EXPLAIN_TIMEOUT_SEC=10 # default
+````