Update xiaomi_aqara.markdown

Danielhiversen · web-flow · commit 93eb1772c6ac · 2017-10-22T20:47:08.000+02:00
diff --git a/source/_components/xiaomi_aqara.markdown b/source/_components/xiaomi_aqara.markdown
@@ -58,6 +58,7 @@ To enable {{ page.title }} in your installation, add the following to your `conf
 ```yaml
 # You can leave mac empty if you only have one gateway.
 xiaomi_aqara:
+  discovery_retry: 5
   gateways:
     - mac:
       key: xxxxxxxxxxxxxxxx
