fix jenkins link (#237)

Author: hgschmie

pom.xml

@@ -100,7 +100,7 @@ under the License.
   </issueManagement>
   <ciManagement>
     <system>Jenkins</system>
-    <url>https://ci-builds.apache.org/job/Maven/job/maven-box/job/maven-javadoc-plugin/</url>
+    <url>https://ci-maven.apache.org/job/Maven/job/maven-box/job/maven-javadoc-plugin/</url>
   </ciManagement>
   <distributionManagement>
     <site>