Add javadoc return description for getHitCount

src/main/java/at/ac/uibk/gitsearch/service/dto/SearchResultsDTO.java

@@ -74,7 +74,7 @@ public class SearchResultsDTO {
 	/**
 	 * returns the number of all hits.
 	 *
-	 * @return
+	 * @return the number of all hits
 	 */
 	public long getHitCount() {
 		return hitCount;