Fix link to QuantityType in UoM blog post (#5222)

* Fix link to QuantityType in UoM blog post

fixes #5221
Signed-off-by: Simon Kaufmann <simon.kfm@googlemail.com>

* cleanup jekyll configuration

Signed-off-by: Simon Kaufmann <simon.kfm@googlemail.com>

docs/_config.yml

@@ -1,14 +1,7 @@
 # Site settings
 title: Eclipse SmartHome - A flexible Framework for the Smart Home
-email: your-email@domain.com
-description: > # this means to ignore newlines until "baseurl:"
-  Write an awesome description for your new site here. You can edit this
-  line in _config.yml. It will appear in your document head meta (for
-  Google search results) and in your feed.xml site description.
-baseurl: "/smarthome/" # the subpath of your site, e.g. /blog/
-url: "https://www.eclipse.org/smarthome" # the base hostname & protocol for your site
-twitter_username: jekyllrb
-github_username:  jekyll
+baseurl: "/smarthome"
+url: "https://www.eclipse.org/smarthome"
 
 # Build settings
 markdown: kramdown

docs/_posts/2018-02-22-units-of-measurement.md

@@ -21,7 +21,7 @@ Apart from SI there are other systems in use like the imperial unit system. The
 Depending on the users locale or cultural preference a specific unit might fit the users needs. For temperature it is common to use degree Celsius (°C) in most places around the globe but degree Fahrenheit (°F) is used in the United States of America.
 
 ##### UoM data with QuantityType
-Sensor devices and internet services connected to Eclipse SmartHome as Things provide their scalar values in an implicit unit of measurement. The binding developer knows what exact unit the sensor or service data uses and can pass those values to the framework using the new [`QuantityType`](../documentation/concepts/units-of-measurement.html). QuantityType represents the scalar value with the corresponding unit. It also serves as the main API to convert between different units.
+Sensor devices and internet services connected to Eclipse SmartHome as Things provide their scalar values in an implicit unit of measurement. The binding developer knows what exact unit the sensor or service data uses and can pass those values to the framework using the new [`QuantityType`]({{ site.baseurl }}{% link documentation/concepts/units-of-measurement.md %}). QuantityType represents the scalar value with the corresponding unit. It also serves as the main API to convert between different units.
 The Yahoo Weather binding makes use of `QuantityType` and publishes state updates in the following form:
 
 ```(java)