Turn off doclint also during Maven site generation

Change-Id: Iefc77114de21e7a101642f5c3a8f0fb317886ba2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

pom.xml

@@ -689,6 +689,17 @@
           </plugin>
         </plugins>
       </build>
+      <reporting>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-javadoc-plugin</artifactId>
+            <configuration>
+              <additionalparam>-Xdoclint:-missing</additionalparam>
+            </configuration>
+          </plugin>
+        </plugins>
+      </reporting>
     </profile>
     <profile>
       <id>static-checks</id>