FileUtils#listFiles: fix javadoc warnings
@@ -504,10 +504,10 @@ private static void innerListFiles(final Collection<File> files, final File dire
*
* @param directory the directory to search in
* @param fileFilter filter to apply when finding files. Must not be {@code null},
- * use {@link TrueFileFilter.INSTANCE} to match all files in selected directories.
+ * use {@link TrueFileFilter#INSTANCE} to match all files in selected directories.
* @param dirFilter optional filter to apply when finding subdirectories.
* If this parameter is {@code null}, subdirectories will not be included in the
- * search. Use {@link TrueFileFilter.INSTANCE} to match all directories.
+ * search. Use {@link TrueFileFilter#INSTANCE} to match all directories.
* @return a collection of java.io.File with the matching files
* @see org.apache.commons.io.filefilter.FileFilterUtils
* @see org.apache.commons.io.filefilter.NameFileFilter
