Correction of line 448 (home-assistant#3786)

misterbenj34 · fabaff · commit 4b33e71440a7 · 2017-10-26T18:17:49.000+02:00
add "sudo" and remove the space before "s"
diff --git a/source/_docs/ecosystem/certificates/lets_encrypt.markdown b/source/_docs/ecosystem/certificates/lets_encrypt.markdown
@@ -445,7 +445,7 @@ To set a cron job to run the script at regular intervals:
  * Change to your Home Assistant user (command similar to):
  
 ```bash
-$ su - s /bin/bash hass
+$ sudo su -s /bin/bash hass
 ```
  
  * Open the crontab:
