✅ Various markdown, spelling, and grammar fixes (#4503)

source/hassio/external_storage.markdown

@@ -9,7 +9,6 @@ sharing: true
 footer: true
 ---
 
-
 ### {% linkable_title ResinOS / Generic %}
 
 Map the USB drive into add-on with `devices` options. If you need it on multiple add-ons, you can use the `/share` folder which is accessible from various add-ons.

source/hassio/index.markdown

@@ -1,7 +1,7 @@
 ---
 layout: page
 title: "Hass.io"
-description: "Manage your Home Assistant and custom addons."
+description: "Manage your Home Assistant and custom add-ons."
 date: 2017-04-30 13:28
 sidebar: true
 comments: false
@@ -15,14 +15,14 @@ Hass.io turns your Raspberry Pi (or another device) into the ultimate home autom
 
 The advantages of using Hass.io:
 
- - Free and open source
- - Optimized for embedded devices like Raspberry Pi
- - 100% local home automation
- - Easy installation and updates (powered by [ResinOS] and [Docker])
- - Management user interface integrated into Home Assistant
- - Easily create and restore full backups of your whole configuration.
- - Easily install many popular add-ons including [Google Assistant], encryption via [Let's Encrypt] and dynamic DNS via [Duck DNS].<br><br>[Browse available add-ons &raquo;][all]<br><br>
- - Active community that is helpful and sharing add-ons including AppDaemon, Homebridge and InfluxDB.<br><br>[Browse the forums &raquo;][forums]<br>[Join the Hass.io chat &raquo;][chat]<br>[Browse community add-on repositories &raquo;][comm-add-ons]<br><br>
+- Free and open source
+- Optimized for embedded devices like Raspberry Pi
+- 100% local home automation
+- Easy installation and updates (powered by [ResinOS] and [Docker])
+- Management user interface integrated into Home Assistant
+- Easily create and restore full backups of your whole configuration.
+- Easily install many popular add-ons including [Google Assistant], encryption via [Let's Encrypt] and dynamic DNS via [Duck DNS].<br><br>[Browse available add-ons &raquo;][all]<br><br>
+- Active community that is helpful and sharing add-ons including AppDaemon, Homebridge and InfluxDB.<br><br>[Browse the forums &raquo;][forums]<br>[Join the Hass.io chat &raquo;][chat]<br>[Browse community add-on repositories &raquo;][comm-add-ons]<br><br>
 
 <div class='videoWrapper'>
 <iframe width="560" height="315" src="https://www.youtube.com/embed/XWPluWcYRMI" frameborder="0" allowfullscreen></iframe>
@@ -30,7 +30,7 @@ The advantages of using Hass.io:
 
 ### {% linkable_title Upgrading %}
 
-Hass.io users can update Home Assistant via the 'Hass.io' page in the UI. However please note that Home Assistant updates take time to roll into the Hass.io builds. Therefore there is often a slight delay between the availability of a Home Assistant update and an update being available in Hass.io, be patient. When a Hass.io update is available it will be shown as available on the ‘Hass.io' page in your UI.
+Hass.io users can update Home Assistant via the 'Hass.io' page in the UI. However please note that Home Assistant updates take time to roll into the Hass.io builds. Therefore there is often a slight delay between the availability of a Home Assistant update and an update being available in Hass.io, be patient. When a Hass.io update is available, it will be shown as available on the ‘Hass.io' page in your UI.
 
 <p class='img'>
 <img src='/images/hassio/screenshots/dashboard.png'>

source/hassio/installation.markdown

@@ -21,7 +21,7 @@ Hass.io images are available for all available Raspberry Pi and Intel NUC platfo
 - Insert SD card to Raspberry Pi and turn it on. On first boot, it downloads the latest version of Home Assistant which takes ~20 minutes (slower/faster depending on the platform).
 
 <p class='note'>
-Please remember to ensure you're using an [appropriate power supply](https://www.raspberrypi.org/help/faqs/#powerReqs) with your Pi. Mobile chargers may not be suitable, since some are designed to only provide the full power with that manufacturer's handsets.
+Please remember to ensure you're using an [appropriate power supply](https://www.raspberrypi.org/help/faqs/#powerReqs) with your Pi. Mobile chargers may not be suitable since some are designed to only provide the full power with that manufacturer's handsets.
 </p>
 
 <img src='/images/hassio/screenshots/first-start.png' style='clear: right; border:none; box-shadow: none; float: right; margin-bottom: 12px;' width='150' />
@@ -42,7 +42,7 @@ curl -sL https://raw.githubusercontent.com/home-assistant/hassio-build/master/in
 ```
 
 <p class='note'>
-When you use this installation method, some add-ons will not be available and the documentation might not work for your installation.
+When you use this installation method, some add-ons will not be available, and the documentation might not work for your installation.
 </p>
 
 A detailed guide about running Hass.io as a virtual machine is available in the [blog](/blog/2017/11/29/hassio-virtual-machine/).

source/hassio/installing_third_party_addons.markdown

@@ -16,7 +16,7 @@ https://github.com/home-assistant/hassio-addons-example
 ```
 
 <p class='note warning'>
-Home Assistant cannot guarantee the quality or security of third party add-ons. Use at your own risk.
+Home Assistant cannot guarantee the quality or security of third-party add-ons. Use at your own risk.
 </p>
 
 <p class='img'>

source/hassio/run_local.markdown

@@ -1,7 +1,7 @@
 ---
 layout: page
 title: "Run local scripts"
-description: "Instructions on how-to run local script for Home Assistant."
+description: "Instructions on how to run a local script for Home Assistant."
 date: 2017-04-30 13:28
 sidebar: true
 comments: false
@@ -72,6 +72,7 @@ RUN apk --no-cache add jq mosquitto-clients
 ```
 
 Now we can process it with `run.sh`:
+
 ```bash
 #!/bin/bash
 set -e

source/hassio/zwave.markdown

@@ -31,12 +31,12 @@ zwave:
   usb_path: /dev/ttyAMA0
 ```
 
-### HUSBZB-1:
+### HUSBZB-1
 
 ```yaml
 zwave:
   usb_path: /dev/ttyUSB0
-  
+
 zha:
   usb_path: /dev/ttyUSB1
   database_path: /config/zigbee.db