LUCENE-1803: Fix javadocs for LowerCaseTokenizer

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@803404 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/lucene/analysis/LowerCaseTokenizer.java

@@ -35,8 +35,8 @@ public final class LowerCaseTokenizer extends LetterTokenizer {
     super(in);
   }
 
-  /** Collects only characters which satisfy
-   * {@link Character#isLetter(char)}.*/
+  /** Converts char to lower case
+   * {@link Character#toLowerCase(char)}.*/
   protected char normalize(char c) {
     return Character.toLowerCase(c);
   }