one empty line is okay

Author: Siedlerchr

src/test/java/org/jabref/logic/l10n/LocalizationConsistencyTest.java

@@ -130,8 +130,10 @@ void findMissingLocalizationKeys() throws IOException {
                                    key.getValueForEnglishPropertiesFile()))
                            .collect(Collectors.joining("\n",
                                    """
+
                                            DETECTED LANGUAGE KEYS WHICH ARE NOT IN THE ENGLISH LANGUAGE FILE
                                            PASTE THESE INTO THE ENGLISH LANGUAGE FILE
+
                                            """,
                                    "\n\n")));
     }
@@ -143,8 +145,10 @@ void findObsoleteLocalizationKeys() throws IOException {
                 obsoleteKeys.stream().collect(Collectors.joining("\n",
                         "Obsolete keys found in language properties file: \n\n",
                         """
+
                                 1. CHECK IF THE KEY IS REALLY NOT USED ANYMORE
                                 2. REMOVE THESE FROM THE ENGLISH LANGUAGE FILE
+
                                 """))
         );
     }