fix: create generated pdf into visualization/output-data because of docker

visualization/src/main/java/cz/muni/pa165/service/VisualizationService.java

@@ -102,7 +102,7 @@ public class VisualizationService {
             document.save(baos);
 
             String outputDirName = "output-data";
-            Path projectDir = Paths.get("").toAbsolutePath().getParent();
+            Path projectDir = Paths.get("");
             Path outputDirPath = projectDir.resolve(outputDirName);
 
             // Create output directory if it does not exist