upgrade maven-javadoc-plugin version to 2.10.4

Author: fmbenhassine

pom.xml

@@ -83,7 +83,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>2.10.3</version>
+                <version>2.10.4</version>
                 <configuration>
                     <stylesheet>maven</stylesheet>
                 </configuration>