fix maven-javadoc-plugin configuration.

Descriptions of the changes in this PR:

change the doclint configuration in pom.xml 



### Motivation

when you clone the project there is always warning in IntelliJ IDEA

### Changes

change the doclint configuration in pom.xml  according to https://stackoverflow.com/questions/52547306/maven-javadoc-plugin-not-accepting-additionalparam-xdoclintnone-additionalpa



Reviewers: Enrico Olivelli <eolivelli@gmail.com>, Sijie Guo <None>

This closes #2409 from WJL3333/fix_maven_pom_doclint_config
diff --git a/bookkeeper-server/pom.xml b/bookkeeper-server/pom.xml
index adae9f6..5bef417 100644
--- a/bookkeeper-server/pom.xml
+++ b/bookkeeper-server/pom.xml
@@ -234,7 +234,7 @@
         <version>${maven-javadoc-plugin.version}</version>
         <configuration>
           <!-- Avoid for missing javadoc comments to be marked as errors -->
-          <additionalparam>-Xdoclint:none</additionalparam>
+          <doclint>-Xdoclint:none</doclint>
           <subpackages>org.apache.bookkeeper.client:org.apache.bookkeeper.conf:org.apache.bookkeeper.feature</subpackages>
           <groups>
             <group>
diff --git a/bookkeeper-stats/pom.xml b/bookkeeper-stats/pom.xml
index 98e5bde..40867c8 100644
--- a/bookkeeper-stats/pom.xml
+++ b/bookkeeper-stats/pom.xml
@@ -34,7 +34,7 @@
         <version>${maven-javadoc-plugin.version}</version>
         <configuration>
           <!-- Avoid for missing javadoc comments to be marked as errors -->
-          <additionalparam>-Xdoclint:none</additionalparam>
+          <doclint>-Xdoclint:none</doclint>
           <subpackages>org.apache.bookkeeper.stats</subpackages>
           <groups>
             <group>
diff --git a/pom.xml b/pom.xml
index 2b8835a..e76e883 100644
--- a/pom.xml
+++ b/pom.xml
@@ -871,7 +871,7 @@
         <version>${maven-javadoc-plugin.version}</version>
         <configuration>
           <!-- Prevent missing javadoc comments from being marked as errors -->
-          <additionalparam>-Xdoclint:none -notimestamp</additionalparam>
+          <doclint>-Xdoclint:none -notimestamp</doclint>
           <additionalOptions>
             <additionalOption>-Xdoclint:none -notimestamp</additionalOption>
           </additionalOptions>
diff --git a/stream/distributedlog/pom.xml b/stream/distributedlog/pom.xml
index afb3581..06e6b65 100644
--- a/stream/distributedlog/pom.xml
+++ b/stream/distributedlog/pom.xml
@@ -45,7 +45,7 @@
         <version>${maven-javadoc-plugin.version}</version>
         <configuration>
           <!-- Avoid for missing javadoc comments to be marked as errors -->
-          <additionalparam>-Xdoclint:none -notimestamp</additionalparam>
+          <doclint>-Xdoclint:none -notimestamp</doclint>
           <groups>
             <group>
               <title>Core Library</title>