Fix javadoc warnings from checkstyle

The warnings from checkstyle are rarely useful, but it is easier to
resolve the checkstyle warnings than the decide which checkstyle warnings
should be ignored.

src/main/java/org/jvnet/hudson/plugins/platformlabeler/LabelConfig.java

@@ -7,7 +7,7 @@
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.DataBoundSetter;
 
-/** Stores configuration about labels to generate */
+/** Stores configuration about labels to generate. */
 public class LabelConfig extends AbstractDescribableImpl<LabelConfig> {
 
   private boolean architecture = true;

src/main/java/org/jvnet/hudson/plugins/platformlabeler/NodeLabelCache.java

@@ -48,7 +48,7 @@
 @Extension
 public class NodeLabelCache extends ComputerListener {
 
-  /** The OS properties for nodes * */
+  /** The OS properties for nodes. */
   private static transient Map<Computer, PlatformDetails> nodePlatformProperties =
       Collections.synchronizedMap(new WeakHashMap<>());
   /** The labels computed for nodes - accessible package wide. */
@@ -72,7 +72,7 @@ public final void onOnline(final Computer computer, final TaskListener ignored)
     refreshModel(computer);
   }
 
-  /** When any computer has changed, update the platform labels according to the configuration */
+  /** When any computer has changed, update the platform labels according to the configuration. */
   @Override
   public final void onConfigurationChange() {
     synchronized (nodePlatformProperties) {

src/main/java/org/jvnet/hudson/plugins/platformlabeler/PlatformDetails.java

@@ -2,7 +2,7 @@
 
 import java.io.Serializable;
 
-/** Stores the platform details of a node */
+/** Stores the platform details of a node. */
 public class PlatformDetails implements Serializable {
 
   private static final long serialVersionUID = 1L;
@@ -14,6 +14,13 @@ public class PlatformDetails implements Serializable {
   private final String architectureName;
   private final String nameVersion;
 
+  /**
+   * Platform details constructor.
+   *
+   * @param name name of operating system, as in windows, debian, ubuntu, etc.
+   * @param architecture hardware architecture, as in amd64, aarh64, etc.
+   * @param version version of operating system, as in 9.1, 14.04, etc.
+   */
   public PlatformDetails(String name, String architecture, String version) {
     this.name = name;
     this.architecture = architecture;

src/main/java/org/jvnet/hudson/plugins/platformlabeler/PlatformDetailsTask.java

@@ -216,9 +216,9 @@ protected PlatformDetails computeLabels(
   }
 
   /**
-   * Maps the ID string from /etc/os-release and /etc/redhat-release to the Distributor ID value
-   * output by lsb_release -a so that users have the same operating system name in the label whether
-   * the label was generated using os-release or using lsb_release
+   * Maps the ID string from /etc/os-release and /etc/redhat-release to the Distributor ID value.
+   * Matches output by lsb_release -a so that users have the same operating system name in the label
+   * whether the label was generated using os-release or using lsb_release.
    */
   private static final Map<String, String> PREFERRED_LINUX_OS_NAMES = new HashMap<>();
 

src/main/java/org/jvnet/hudson/plugins/platformlabeler/PlatformLabelerGlobalConfiguration.java

@@ -15,6 +15,7 @@ public class PlatformLabelerGlobalConfiguration extends GlobalConfiguration {
 
   private LabelConfig labelConfig;
 
+  /** Standard constructor. */
   public PlatformLabelerGlobalConfiguration() {
     load();
     if (labelConfig == null) {