Update UPDATE.md

Author: Chris Wiechmann

UPDATE.md

@@ -12,7 +12,7 @@ With the following steps you can update the solution without downtime. Of course
 
 ### General overview
 
-The core component is the API Builder project which provides the information about the necessary configuration. In principle, it contains the desired or necessary state suitable for the version, especially about the Elasticsearch configuration, such as index templates, ILM policies, etc. If the version is updated, the API builder checks the current configuration in Elasticsearch and adjusts it if necessary to fit the corresponding version. This includes necessary changes for bug fixes or enhancements.  
+The core component is the API Builder application which provides the information about the necessary configuration. In principle, it contains the desired or necessary state suitable for the version, especially about the Elasticsearch configuration, such as index templates, ILM policies, etc. If the version is updated, the API builder checks the current configuration in Elasticsearch and adjusts it if necessary to fit the corresponding version. This includes necessary changes for bug fixes or enhancements.  
 
 #### Upgrade steps overview