fix property naming error

src/main/scala/ch/memobase/RecordProcessor.scala

@@ -43,7 +43,7 @@ class RecordProcessor(fileHandler: DisseminationCopyHandler,
                       appSettings: Properties) extends FileUtils {
 
   val rootPath: String = appSettings.getProperty("mediaFolderRootPath")
-  val cachedImagePath: String = appSettings.getProperty("cachedMediaFolderPath")
+  val cachedImagePath: String = appSettings.getProperty("thumbnailFolderPath")
   val distributorUrl: String = appSettings.getProperty("distributorUrl")
   val maxRetries: Int = appSettings.getProperty("connectionMaxRetries").toInt
   val retryAfter: Int = appSettings.getProperty("connectionRetryAfterMs").toInt