update to reference hassio doc (home-assistant#3337)

eoosting · fabaff · commit cf515b77fc29 · 2017-09-10T22:29:28.000+02:00
reference hassio doc root in order to make way for eventual upgrade documentation there.
diff --git a/source/_docs/installation/updating.markdown b/source/_docs/installation/updating.markdown
@@ -23,7 +23,7 @@ $ pip3 install --upgrade homeassistant
 After updating, you must restart Home Assistant for the changes to take effect. This means that you will have to restart `hass` itself or the [autostarting](/docs/autostart/) daemon (if applicable). Startup can take considerable amount of time (i.e. minutes) depending on your device. This is because all requirements are updated as well.
 
 <p class='note'>
-To avoid permission errors, the upgrade must be run as the same user as the installation was completed, again review the documentation specific to your install [HASSbian](/docs/hassbian/installation/), [Raspberry Pi All-In-One Installer](/docs/installation/raspberry-pi-all-in-one/), [Vagrant](/docs/installation/vagrant/), or [Virtualenv](/docs/installation/virtualenv).
+To avoid permission errors, the upgrade must be run as the same user as the installation was completed, again review the documentation specific to your install [HASSIO](/hassio/), [HASSbian](/docs/hassbian/installation/), [Raspberry Pi All-In-One Installer](/docs/installation/raspberry-pi-all-in-one/), [Vagrant](/docs/installation/vagrant/), or [Virtualenv](/docs/installation/virtualenv).
 </p>
 
 [BRUH automation](http://www.bruhautomation.com) has created [a tutorial video](https://www.youtube.com/watch?v=tuG2rs1Cl2Y) explaining how to upgrade Home Assistant.
