adjust POM to changes in Maven assembly plugin

Author: hlg

BimServerJar/pom.xml

@@ -37,7 +37,9 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-assembly-plugin</artifactId>
 				<configuration>
-					<descriptor>assembly.xml</descriptor>
+					<descriptors>
+						<descriptor>assembly.xml</descriptor>
+					</descriptors>
 					<finalName>starter</finalName>
 					<appendAssemblyId>false</appendAssemblyId>
 					<archive>