Update NGramMap.java

src/edu/caltech/cs2/datastructures/NGramMap.java

@@ -106,7 +106,7 @@ public class NGramMap {
      * times each word was seen after ngram.
      *
      * @param ngram - the ngram we want counts for
-     * @return an array of hashmaps of words to counts
+     * @return an array of PQElements
      */
     public IPriorityQueue.PQElement<String>[] getCountsAfter(NGram ngram) {
         return null;