Remove empty p tag

Author: oschwald

src/main/java/com/maxmind/minfraud/response/Warning.java

@@ -24,7 +24,7 @@ public Warning(
     /**
      * This provides a machine-readable code identifying the warning. Although
      * more codes may be added in the future, the current codes are:
-     * <p>
+     *
      * <ul>
      * <li>BILLING_CITY_NOT_FOUND – the billing city could not be found in
      * our database.</li>