Small adjustment to the url validation

docs/clmc-service.md

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+//      Created By :            Nikolay Stanchev
+//      Created Date :          02-05-2018
+//      Created for Project :   FLAME
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+
+# **Flame CLMC API Service**
+
+#### **Authors**
+
+|Authors|Organisation|                    
+|---|---|  
+|[Nikolay Stanchev](mailto:ns17@it-innovation.soton.ac.uk)|[University of Southampton, IT Innovation Centre](http://www.it-innovation.soton.ac.uk)|
+
+#### Description
+
+This document describes the CLMC service and its API endpoints. The CLMC service is implemented in the *Python* framework called **Pyramid**.
+It offers different API endpoints to configure and control the aggregator, which is an essential part in the process of measuring the end-to-end performance.

src/clmc-webservice/clmcservice/utilities.py

@@ -72,7 +72,7 @@ def validate_config_content(configuration):
 
     assert configuration.get('aggregator_report_period') > 0, "Report period must be a positive integer, received {0} instead.".format(configuration.get('aggregator_report_period'))
 
-    assert URL_REGEX.match(configuration.get('aggregator_database_url')) is not None, "The aggregator must have a valid database URL in its configuration, received {0} instead.".format(configuration.get('aggregator_report_period'))
+    assert URL_REGEX.match(configuration.get('aggregator_database_url')) is not None, "The aggregator must have a valid database URL in its configuration, received {0} instead.".format(configuration.get('aggregator_database_url'))
 
     return configuration