Fix javadoc executable path

Author: gresrun

pom.xml

@@ -207,7 +207,7 @@
                 <artifactId>maven-javadoc-plugin</artifactId>
                 <version>2.10.4</version>
                 <configuration>
-                    <javadocExecutable>${java.home}/../bin/javadoc</javadocExecutable>
+                    <javadocExecutable>${java.home}/bin/javadoc</javadocExecutable>
                 </configuration>
             </plugin>
             <plugin>