(doc) (#417)

Fixing couple of dangling javadocs, converted to comments.

src/main/java/org/apache/commons/lang3/ClassUtils.java

@@ -128,10 +128,7 @@ public class ClassUtils {
      * Maps an abbreviation used in array class names to corresponding primitive class name.
      */
     private static final Map<String, String> reverseAbbreviationMap;
-
-    /**
-     * Feed abbreviation maps
-     */
+    // Feed abbreviation maps
     static {
         final Map<String, String> m = new HashMap<>();
         m.put("int", "I");

src/main/java/org/apache/commons/lang3/concurrent/LazyInitializer.java

@@ -82,7 +82,7 @@ public abstract class LazyInitializer<T> implements ConcurrentInitializer<T> {
     private static final Object NO_INIT = new Object();
 
     @SuppressWarnings("unchecked")
-    /** Stores the managed object. */
+    // Stores the managed object.
     private volatile T object = (T) NO_INIT;
 
     /**