Change to home assistant log file (home-assistant#2784)

samuelmaggs · Landrash · commit 0b5dc82360bd · 2017-06-08T14:05:40.000+02:00
Should have been home-assistant. Otherwise it just tries to create a new file
diff --git a/source/_docs/hassbian/common-tasks.markdown b/source/_docs/hassbian/common-tasks.markdown
@@ -84,7 +84,7 @@ Log in as the `pi` account and execute the following commands:
 ```bash
 $ sudo su -s /bin/bash homeassistant
 $ cd /home/homeassistant/.homeassistant
-$ nano homeassistant.log
+$ nano home-assistant.log
 ```
 
 This will in order do the following:
