Space after if

Signed-off-by: Etienne Homer <etiennehomer@gmail.com>

src/main/java/com/powsybl/caseserver/service/S3CaseService.java

@@ -318,7 +318,7 @@ private static String removeExtension(String filename, String extension) {
         int index = filename.lastIndexOf(extension);
         if (index == -1) {
             return filename;
-        } else if(index + extension.length() != filename.length()) {
+        } else if (index + extension.length() != filename.length()) {
             //extension to remove is not at the end
             throw CaseException.createIllegalCaseName(filename);
         }