Fixes ListBuffer import-mapping for scala

Author: Johannes Stickel

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AsyncScalaClientCodegen.java

@@ -60,7 +60,7 @@ public AsyncScalaClientCodegen() {
         importMapping.remove("Map");
 
         importMapping.put("DateTime", "org.joda.time.DateTime");
-        importMapping.put("ListBuffer", "scala.collections.mutable.ListBuffer");
+        importMapping.put("ListBuffer", "scala.collection.mutable.ListBuffer");
 
         typeMapping = new HashMap<String, String>();
         typeMapping.put("enum", "NSString");

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/ScalaClientCodegen.java

@@ -76,7 +76,7 @@ public ScalaClientCodegen() {
         importMapping.remove("Map");
 
         importMapping.put("DateTime", "org.joda.time.DateTime");
-        importMapping.put("ListBuffer", "scala.collections.mutable.ListBuffer");
+        importMapping.put("ListBuffer", "scala.collection.mutable.ListBuffer");
 
         typeMapping = new HashMap<String, String>();
         typeMapping.put("enum", "NSString");