Fix Javadoc code elements

src/main/java/org/apache/commons/collections4/bloomfilter/ArrayCountingBloomFilter.java

@@ -62,7 +62,7 @@ public final class ArrayCountingBloomFilter implements CountingBloomFilter {
     private final int[] cells;
 
     /**
-     * The state flag. This is a bitwise @{code OR} of the entire history of all updated
+     * The state flag. This is a bitwise {@code OR} of the entire history of all updated
      * cells. If negative then a negative cell or integer overflow has occurred on
      * one or more cells in the history of the filter and the state is invalid.
      *

src/main/java/org/apache/commons/collections4/bloomfilter/CountingLongPredicate.java

@@ -19,20 +19,20 @@
 import java.util.function.LongPredicate;
 
 /**
- * A long predicate that applies the test func to each member of the @{code ary} in sequence for each call to @{code test()}.
- * if the @{code ary} is exhausted, the subsequent calls to @{code test} are executed with a zero value.
- * If the calls to @{code test} do not exhaust the @{code ary} the @{code forEachRemaining} method can be called to
- * execute the @code{text} with a zero value for each remaining @{code idx} value.
+ * A long predicate that applies the test func to each member of the {@code ary} in sequence for each call to {@code test()}.
+ * if the {@code ary} is exhausted, the subsequent calls to {@code test} are executed with a zero value.
+ * If the calls to {@code test} do not exhaust the {@code ary} the {@code forEachRemaining} method can be called to
+ * execute the @code{text} with a zero value for each remaining {@code idx} value.
  */
 class CountingLongPredicate implements LongPredicate {
     private int idx;
     private final long[] ary;
     private final LongBiPredicate func;
 
     /**
-     * Constructs an instance that will compare the elements in @{code ary} with the elements returned by @{code func}.
-     * function is called as @{code func.test( idxValue, otherValue )}. If there are more @{code otherValue} values than
-     * @{code idxValues} then @{code func} is called as @{code func.test( 0, otherValue )}.
+     * Constructs an instance that will compare the elements in {@code ary} with the elements returned by {@code func}.
+     * function is called as {@code func.test( idxValue, otherValue )}. If there are more {@code otherValue} values than
+     * {@code idxValues} then {@code func} is called as {@code func.test( 0, otherValue )}.
      * @param ary The array of long values to compare.
      * @param func The function to apply to the pairs of long values.
      */

src/main/java/org/apache/commons/collections4/bloomfilter/Hasher.java

@@ -27,7 +27,7 @@ public interface Hasher {
     /**
      * Creates an IndexProducer for this hasher based on the Shape.
      *
-     * <p>The @{code IndexProducer} will create indices within the range defined by the number of bits in
+     * <p>The {@code IndexProducer} will create indices within the range defined by the number of bits in
      * the shape. The total number of indices will respect the number of hash functions per item
      * defined by the shape. However the count of indices may not be a multiple of the number of
      * hash functions if the implementation has removed duplicates.</p>

src/test/java/org/apache/commons/collections4/collection/AbstractCollectionTest.java

@@ -53,7 +53,7 @@
  * <p>
  * You should create a concrete subclass of this class to test any custom
  * {@link Collection} implementation.  At minimum, you'll have to
- * implement the @{@link #makeObject()}, {@link #makeConfirmedCollection()}
+ * implement the {@link #makeObject()}, {@link #makeConfirmedCollection()}
  * and {@link #makeConfirmedFullCollection()} methods.
  * You might want to override some of the additional public methods as well:
  * <p>