adding singleColumnImport boolean parameter per reviewer suggestion.

Author: Marin

sormas-ui/src/main/java/de/symeda/sormas/ui/campaign/importer/CampaignFormDataImportLayout.java

@@ -41,8 +41,7 @@ public CampaignFormDataImportLayout(CampaignFormMetaReferenceDto campaignForm, C
 					campaignForm.getUuid(),
 					campaignReferenceDto,
 					(ValueSeparator) separator.getValue());
-				importer.startImport(this::extendDownloadErrorReportButton, currentUI, false, false
-				);
+				importer.startImport(this::extendDownloadErrorReportButton, currentUI, false, false);
 			} catch (IOException | CsvValidationException e) {
 				new Notification(
 					I18nProperties.getString(Strings.headingImportFailed),