Typos a/an (#13812)

bundles/org.openhab.binding.lifx/src/main/java/org/openhab/binding/lifx/internal/dto/PacketFactory.java

@@ -118,7 +118,7 @@ public class PacketFactory {
     /**
      * Registers a new generic packet handler for the given packet class. The
      * packet class must meet the criteria for {@link GenericHandler};
-     * specifically, it must have an no-argument constructor and require no
+     * specifically, it must have a no-argument constructor and require no
      * parsing logic outside of an invocation of
      * {@link Packet#parse(java.nio.ByteBuffer)}.
      *