Code review comment: Ok, no problem, I didn't know it. I'm gonna do like this.

Code under review:
private void detectAndLogSpecificSpringPropertiesIfExist() {
        Config config = ConfigProvider.getConfig();
        Map<String, String> springJpaToQuarkusOrmPropertiesMap = new HashMap<>();
        springJpaToQuarkusOrmPropertiesMap.put("spring.jpa.show-sql", "quarkus.hibernate-orm.log.sql");
        springJpaToQuarkusOrmPropertiesMap.put("spring.jpa.properties.hibernate.dialect ", "quarkus.hibernate-orm.dialect");
        springJpaToQuarkusOrmPropertiesMap.put("spring.jpa.properties.hibernate.dialect.storage_engine",
                "quarkus.hibernate-orm.dialect.storage-engine");
        springJpaToQuarkusOrmPropertiesMap.put("spring.jpa.generate-ddl", "quarkus.hibernate-orm.database.generation");

        Iterable<String> iterablePropertyNames = config.getPropertyNames();
        List<String> propertyNames = new ArrayList<String>();
        iterablePropertyNames.forEach(propertyNames::add);
        Pattern pattern = Pattern.compile("spring\\.jpa\\..*");
        Matcher matcher = pattern.matcher("");
        List<String> springProperties = propertyNames.stream().filter(s -> matcher.reset(s).matches()).collect(toList());
        if (!springProperties.isEmpty()) {
            String warningLog = "Quarkus does not support the ";
            for (String springProperty : springProperties) {
                String quarkusProperty = springJpaToQuarkusOrmPropertiesMap.get(springProperty);
                if (quarkusProperty != null) {
                    warningLog = warningLog + springProperty + " property " + "you may try to use the Quarkus equivalent one : "
                            + quarkusProperty + ".";
                }
                LOGGER.warn(warningLog + springProperty + " property. ");
            }

        }
    }

Line commented on: LOGGER.warn(warningLog + springProperty + " property. ");

Revised code:
private void detectAndLogSpecificSpringPropertiesIfExist() {
        Config config = ConfigProvider.getConfig();

        Iterable<String> iterablePropertyNames = config.getPropertyNames();
        List<String> propertyNames = new ArrayList<String>();
        iterablePropertyNames.forEach(propertyNames::add);
        List<String> springProperties = propertyNames.stream().filter(s -> pattern.matcher(s).matches()).collect(toList());
        String notSupportedProperties = "";

        if (!springProperties.isEmpty()) {
            for (String sp : springProperties) {
                switch (sp) {
                    case SPRING_JPA_SHOW_SQL:
                        notSupportedProperties = notSupportedProperties + "\t- " + SPRING_JPA_SHOW_SQL
                                + " should be replaced by " + QUARKUS_HIBERNATE_ORM_LOG_SQL + "\n";
                        break;
                    case SPRING_JPA_PROPERTIES_HIBERNATE_DIALECT:
                        notSupportedProperties = notSupportedProperties + "\t- " + SPRING_JPA_PROPERTIES_HIBERNATE_DIALECT
                                + " should be replaced by " + QUARKUS_HIBERNATE_ORM_DIALECT + "\n";
                        break;
                    case SPRING_JPA_PROPERTIES_HIBERNATE_DIALECT_STORAGE_ENGINE:
                        notSupportedProperties = notSupportedProperties + "\t- "
                                + SPRING_JPA_PROPERTIES_HIBERNATE_DIALECT_STORAGE_ENGINE + " should be replaced by "
                                + QUARKUS_HIBERNATE_ORM_DIALECT_STORAGE_ENGINE + "\n";
                        break;
                    case SPRING_JPA_GENERATE_DDL:
                        notSupportedProperties = notSupportedProperties + "\t- " + SPRING_JPA_GENERATE_DDL
                                + " should be replaced by " + QUARKUS_HIBERNATE_ORM_DATABASE_GENERATION + "\n";
                        break;
                    default:
                        notSupportedProperties = notSupportedProperties + "\t- " + sp + "\n";
                        break;
                }
            }
            LOGGER.warnf(
                    "Quarkus does not support the following Spring Boot configuration properties: %n%s",
                    notSupportedProperties);
        }
    }