Fixed variable name being uppercase (codestyle)

Author: Johannes Duesing

src/main/scala/de/upb/cs/swt/delphi/instancemanagement/InstanceRegistry.scala

@@ -190,7 +190,7 @@ object InstanceRegistry extends InstanceJsonSupport with AppLogging {
       } else {
         val idToPost = configuration.elasticsearchInstance.id.getOrElse(-1L)
 
-        val MatchingData = JsObject("MatchingSuccessful" -> JsBoolean(isElasticSearchReachable),
+        val matchingData = JsObject("MatchingSuccessful" -> JsBoolean(isElasticSearchReachable),
           "SenderId" -> JsNumber(configuration.assignedID.getOrElse(-1L)))
 
         val request = HttpRequest(
@@ -199,7 +199,7 @@ object InstanceRegistry extends InstanceJsonSupport with AppLogging {
 
         Await.result(Http(system).singleRequest(request
           .withHeaders(RawHeader("Authorization",s"Bearer ${AuthProvider.generateJwt()}"))
-          .withEntity(ContentTypes.`application/json`, ByteString(MatchingData.toJson.toString))) map { response =>
+          .withEntity(ContentTypes.`application/json`, ByteString(matchingData.toJson.toString))) map { response =>
           if (response.status == StatusCodes.OK) {
             log.info(s"Successfully posted matching result to Instance Registry.")
             Success()