E:\temp\CheckstyleReport>type config.xml
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
          "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
          "https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="Checker">
  <module name="TreeWalker">
    <module name="SummaryJavadoc">
      <property name="forbiddenSummaryFragments"
        value="^[a-z]"/>
    </module>
  </module>
</module>

E:\temp\CheckstyleReport>type Test.java
class Test {
        /**
         * adds an element to the list.
         *
         * @param element the element to add
         */
        public void add(String element) {}
}

E:\temp\CheckstyleReport>set RUN_LOCALE="-Duser.language=en -Duser.country=US"

E:\temp\CheckstyleReport>java %RUN_LOCALE% -jar checkstyle-13.0.0-all.jar -c config.xml Test.java
Starting audit...
Audit done.

E:\temp\CheckstyleReport>